Tomato Paste (Small Amounts) Overview

Tomato paste is a highly concentrated form of tomatoes with most of the water removed. While tomatoes contain natural sugars, tomato paste can be used in very small amounts in low-carb and diabetic-friendly cooking to add depth of flavor without significant carbohydrate impact. Portion size is critical.

Quick Carb Snapshot

  • Carbs (per 100 g): ~19 g total, ~14 g net
  • Carbs (standard portion): ~1–2 g net per tbsp
  • Glycemic Index: Low to Moderate
  • Best Substitutes: Roasted tomato puree, sun-dried tomatoes (small amounts)
  • Diabetic-Friendly? Yes (small portions)
  • Keto-Friendly? Yes (very small amounts)

Key Traits

  • Texture: Thick, smooth paste
  • Flavor: Concentrated tomato umami
  • Carb Impact: Low when portion-controlled
  • GI / GL Notes: Small servings have minimal impact
  • Common Uses: Sauces, soups, stews

Best For

  • Flavor-building in sauces
  • Low-carb cooking (small amounts)
  • Enhancing savory dishes

Avoid For

  • Large quantities
  • Sugar-added versions
  • Tomato sensitivity

How Tomato Paste Compares to Higher-Carb Ingredients

Texture & Structure

  • Highly concentrated flavor
  • Small amounts go far
  • Thickens sauces naturally

Flavor & Nutrition

  • Contains lycopene
  • Natural sugars but low volume
  • No added starch if pure

How to Substitute Tomato Paste

Low-Carb Swaps by Use

  • Sauces: Reduced tomato puree
  • Umami: Roasted red pepper puree
  • Depth: Anchovy paste (very small amount)

Tips for Successful Swaps

  • Use teaspoons, not tablespoons
  • Sauté paste briefly to deepen flavor
  • Check labels for added sugar

Storage & Shelf Life

Pantry

Unopened cans or tubes are shelf-stable.

Cooked

Opened tomato paste keeps 5–7 days refrigerated.

Signs It Has Gone Bad

  • Mold
  • Dark discoloration
  • Sour smell

Carb / Keto & Dietary Notes

  • Carb Impact: Low (portion-controlled)
  • Keto Use: Yes (very small amounts)
  • Diabetic Notes: Acceptable in moderation

This information is for educational purposes only and not medical advice.

Allergy & Dietary Flags

  • Gluten-Free: Yes
  • Nuts: No
  • Nightshade: Yes (tomato)
  • Vegan / Vegetarian: Yes

Carb & Dietary Tags

  • Low-Carb: Yes (small amounts)
  • High-Carb: No
  • Keto-Friendly: Yes (portion-aware)
  • Diabetic-Friendly: Yes
  • Low GI: Yes

Often compared to tomato sauce and crushed tomatoes, tomato paste is best used in very small amounts for flavor without excess carbs.

Quick Carb Snapshot

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