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Key Lime

Citrus aurantifolia Allergen-Free
Key Lime

Sourcing & Taxonomy

  • Family Rutaceae
  • Primary Cuisine Latin American, Caribbean, American (Floridian)
  • Seasonality Late Summer to Early Winter (Peak), Year-Round
  • Source Key Lime tree

The Forktionary Angle

"The irreplaceable ingredient for iconic tropical desserts and refreshing beverages, delivering a sharp, floral tang."

Definition

A small, highly aromatic citrus fruit known for its distinctive tart, floral, and intensely acidic juice, often used in pies and cocktails.

Sensory Profile

TasteIntensely Tart, Floral, Slightly Bitter
TextureJuicy pulp, thin skin
AromaPungent Citrus, Floral
AcidityHigh

Technical Metrics

Average Juice Yield (per lime)

1-2 tablespoons

pH Level

2.0-2.3 (highly acidic)

Shelf Life (refrigerated)

2-3 weeks

Nutrition Facts

Per 67g (1 medium lime)
Calories30 kcal
Total Fat0.2 g
Saturated Fat0 g
Trans Fat0 g
Cholesterol0 mg
Protein0.7 g
Total Carbohydrate11 g
Dietary Fiber2.8 g
Total Sugars1.7 g
Calcium33 mg
Iron0.6 mg
Potassium102 mg

Chef’s Secret

To extract maximum juice from Key Limes, microwave them for 10-15 seconds and then roll firmly on a countertop before slicing and juicing.

Substitutions

Best Match

Persian Lime

1:1 (adjust for less floral notes)

Most common substitute, less aromatic and slightly less tart.

Lemon Juice + Lime Zest

1:1 (juice), Pinch of zest

Provides acidity and some citrus aroma, lemon is less floral.

Bottled Key Lime Juice

1:1

Convenient, but often pasteurized and lacks fresh vibrancy.

Lime Essential Oil (food grade)

Few drops

For intensifying lime flavor in baking or confections, not for acidity.

Buying Guide

Choose small, heavy limes. Green indicates less ripe, yellow is ripe and juicier. Avoid soft spots or dry patches.

Flavor Pairings

Coconut avocado tequila cilantro fish chicken tropical fruits.