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Hazelnut Guide

Giresun hazelnuts, additive-free production, storage tips and gift guides, we answer the questions one by one.

Why Are Giresun Hazelnuts the World’s Finest?
Hazelnut Culture · 28 July 2026

Why Are Giresun Hazelnuts the World’s Finest?

How soil, climate and altitude combine to give Giresun hazelnuts their distinctive aroma.

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How to Store Hazelnut Butter: 5 Practical Rules
Storage & Use · 14 July 2026

How to Store Hazelnut Butter: 5 Practical Rules

How to keep an opened jar fresh and smooth for months.

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Hazelnuts as Corporate Gifts: Why They Work
Giftable · 30 June 2026

Hazelnuts as Corporate Gifts: Why They Work

Why hazelnut boxes stand out for New Year and special-occasion gifting.

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How Many Hazelnuts a Day? A Portion Guide
Health & Nutrition · 10 August 2026

How Many Hazelnuts a Day? A Portion Guide

The daily amount nutritionists suggest, its calorie value, and a practical way to keep portions in check.

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What Is Giresun Tombul? The Meaning of Geographical Indication
Hazelnut Culture · 4 August 2026

What Is Giresun Tombul? The Meaning of Geographical Indication

Registered in 2001 and protected across the EU since 2022, what sets Giresun Tombul apart?

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How to Eat Hazelnut Butter: 10 Practical Ideas
Storage & Use · 22 July 2026

How to Eat Hazelnut Butter: 10 Practical Ideas

Far more than a spread: from porridge to smoothies, coffee to dessert sauces.

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Hazelnuts for Those Seeking Gluten-Free Snacks
Health & Nutrition · 9 July 2026

Hazelnuts for Those Seeking Gluten-Free Snacks

Choosing safe snacks with coeliac disease or gluten sensitivity: labels, cross-contamination and where hazelnuts fit.

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Raw or Roasted? A Guide to Hazelnut Varieties
Hazelnut Culture · 18 June 2026

Raw or Roasted? A Guide to Hazelnut Varieties

The differences between natural, roasted, double-roasted and piccola, and which suits what.

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How to Store Hazelnuts: 6 Rules for a Longer Shelf Life
Storage & Use · 5 June 2026

How to Store Hazelnuts: 6 Rules for a Longer Shelf Life

How moisture, light and air affect hazelnuts, and how to store them in the jar, fridge and freezer.

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Hazelnuts for Weddings and Special Occasions
Giftable · 20 May 2026

Hazelnuts for Weddings and Special Occasions

What to know about quantity, budget and storage when choosing hazelnuts for engagements, henna nights and openings.

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Hazelnuts and Cholesterol: What Do Clinical Trials Show?
Health & Nutrition · 20 August 2026

Hazelnuts and Cholesterol: What Do Clinical Trials Show?

What do randomised controlled trials and meta-analyses say about the effect of hazelnut consumption on LDL cholesterol? We go through the numbers.

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Hazelnut Nutrition: What's in 100 Grams?
Health & Nutrition · 14 August 2026

Hazelnut Nutrition: What's in 100 Grams?

Vitamin E, manganese, copper, magnesium, folate and fibre. A line-by-line look at the hazelnut's nutrient profile using USDA data and academic analyses.

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Giresun Tombul Hazelnut: Why Designation of Origin Matters
Hazelnut Culture · 6 August 2026

Giresun Tombul Hazelnut: Why Designation of Origin Matters

Registered in 2001 and protected across the EU since 2022, the technical properties of Giresun Tombul and what a geographical indication really means.

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Hazelnuts and Insulin Sensitivity: The Effect on Blood Sugar
Health & Nutrition · 28 July 2026

Hazelnuts and Insulin Sensitivity: The Effect on Blood Sugar

Studies on hazelnuts, blood sugar and insulin sensitivity, and why the low carbohydrate content makes a difference.

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Why Do Hazelnuts Turn Rancid? The Science of Oxidation
Storage & Use · 19 July 2026

Why Do Hazelnuts Turn Rancid? The Science of Oxidation

How hazelnuts spoil, which conditions speed it up and what role vitamin E plays, the chemistry behind our storage advice.

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Hazelnut Allergy and Cross-Contamination: What to Know
Health & Nutrition · 10 July 2026

Hazelnut Allergy and Cross-Contamination: What to Know

Tree nut allergy, cross-contamination risk in coeliac disease and how to read labels when choosing gluten-free products.

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Is Everything Labelled "Gluten-Free" Healthy? Research Says Otherwise
Health & Nutrition · 26 August 2026

Is Everything Labelled "Gluten-Free" Healthy? Research Says Otherwise

80% of gluten-free products aimed at children turned out to be high in sugar. What a 1,700-product UK survey and a study in Pediatrics found.

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"Sugar-Free" and "No Added Sugar" Are Not the Same Thing
Health & Nutrition · 24 August 2026

"Sugar-Free" and "No Added Sugar" Are Not the Same Thing

Under the Turkish Food Codex, a product may be called sugar-free only if it contains no more than 0.5 g of sugar per 100 g. So what does 'no added sugar' mean?

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Hazelnut Butter or Chocolate Spread? We Compared the Labels
Storage & Use · 22 August 2026

Hazelnut Butter or Chocolate Spread? We Compared the Labels

What comes first on the ingredient list of supermarket cocoa spreads? A comparison of hazelnut content, palm oil and sugar.

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What to Put in a Child's Lunch Box: A Realistic Guide
Health & Nutrition · 18 August 2026

What to Put in a Child's Lunch Box: A Realistic Guide

The sugar content of packaged snacks, the gluten-free trap and practical options for the school lunch box.

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Do Nuts Make You Gain Weight? A 24-Week Trial Gave a Surprising Answer
Health & Nutrition · 28 August 2026

Do Nuts Make You Gain Weight? A 24-Week Trial Gave a Surprising Answer

Despite being calorie dense, nuts do not cause weight gain in trials. Three mechanisms explain why: satiety hormones, unabsorbed calories and the food matrix.

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How Roasting Temperature Changes a Hazelnut: The Laboratory Data
Hazelnut Culture · 27 August 2026

How Roasting Temperature Changes a Hazelnut: The Laboratory Data

120°C or 170°C? Roasting time and temperature directly affect antioxidant capacity, lipid oxidation and shelf life.

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Aflatoxin in Hazelnuts: Why It Matters and How It Is Prevented
Storage & Use · 25 August 2026

Aflatoxin in Hazelnuts: Why It Matters and How It Is Prevented

How post-harvest drying, storage temperature and sorting affect aflatoxin risk, explained with EU limits and research findings.

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Do Hazelnuts Sharpen Memory? A Trial Measured with Brain MRI
Health & Nutrition · 30 August 2026

Do Hazelnuts Sharpen Memory? A Trial Measured with Brain MRI

Cerebral blood flow and verbal memory were measured in participants over 65 who ate 60 g of nuts daily for 16 weeks. The MRI findings are notable.

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Why the Hazelnut Skin Deserves Attention: 8× the Antioxidants of Dark Chocolate
Hazelnut Culture · 29 August 2026

Why the Hazelnut Skin Deserves Attention: 8× the Antioxidants of Dark Chocolate

The skin is just 2.5% of a hazelnut's weight but holds most of its polyphenols. Measurements put its antioxidant capacity at ten times that of espresso.

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Why Does Türkiye Earn So Little from Hazelnuts? The Export Figures
Hazelnut Culture · 31 August 2026

Why Does Türkiye Earn So Little from Hazelnuts? The Export Figures

Export volume fell 42% in the 2025/26 season while revenue dropped only 6.8%. The figures reveal both the core problem and the opportunity.

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Do Hazelnuts Change Your Gut Flora? The Prebiotic Debate
Health & Nutrition · 1 September 2026

Do Hazelnuts Change Your Gut Flora? The Prebiotic Debate

The fibre and polyphenols in nuts feed gut bacteria. But a meta-analysis of randomised trials paints a more cautious picture than expected.

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Nuts in Pregnancy: A Study of 2,200 Mother-Child Pairs
Health & Nutrition · 2 September 2026

Nuts in Pregnancy: A Study of 2,200 Mother-Child Pairs

Children of mothers who ate nuts in the first trimester scored better on cognitive function, attention and long-term working memory. How reliable is that?

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28 Grams of Nuts a Day: What a Meta-Analysis of 20 Studies Shows
Health & Nutrition · 3 September 2026

28 Grams of Nuts a Day: What a Meta-Analysis of 20 Studies Shows

A dose-response meta-analysis in BMC Medicine quantifies how a 28 g daily increase in nut intake relates to heart disease risk.

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Are Hazelnuts Good for Skin and Hair? We Checked the Evidence
Health & Nutrition · 4 September 2026

Are Hazelnuts Good for Skin and Hair? We Checked the Evidence

Hazelnuts are recommended for skin and hair because of their vitamin E. But what do the clinical trials say? A randomised almond study and the hair-loss research.

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Hazelnuts for Athletes: Magnesium, Recovery and Pre-Workout Use
Health & Nutrition · 5 September 2026

Hazelnuts for Athletes: Magnesium, Recovery and Pre-Workout Use

Athletes lose magnesium through sweat, and hazelnuts provide 163 mg per 100 g. But what does the evidence say about muscle soreness and recovery?

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Why Only 85 Kilos per Decare? Türkiye's Hazelnut Yield Problem
Hazelnut Culture · 6 September 2026

Why Only 85 Kilos per Decare? Türkiye's Hazelnut Yield Problem

Türkiye is the world's largest hazelnut producer but ranks near the bottom for yield. Pruning and renewal have quadrupled output in the same orchards.

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4,000-Year-Old Hazelnut Shells at Kültepe, and a DNA Surprise
Hazelnut Culture · 7 September 2026

4,000-Year-Old Hazelnut Shells at Kültepe, and a DNA Surprise

Charred hazelnut shells from the Assyrian trade colony at Kültepe are the earliest direct evidence of hazelnut trade in the region. A decade-long DNA study then produced an unexpected result.

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Why Hazelnut Allergy Behaves Differently in Türkiye
Health & Nutrition · 8 September 2026

Why Hazelnut Allergy Behaves Differently in Türkiye

In Europe, hazelnut allergy mostly stems from cross-reactivity with birch pollen and tends to be mild. In Türkiye the picture differs, and geography explains why.

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Making Hazelnut Butter at Home: Why It Separates and How to Fix It
Storage & Use · 9 September 2026

Making Hazelnut Butter at Home: Why It Separates and How to Fix It

You can make butter from hazelnuts alone, but the result differs from shop-bought jars. The food science behind it and the practical tips.

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No flour. No gluten. No additives.

Karadeniz Fırtınası is made with hazelnuts alone. We use no fillers, flavourings, preservatives or emulsifiers, what the label says is exactly what’s in the jar.

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