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French-Style Blackberry Vanilla Jam

A sophisticated French-inspired jam blending fresh blackberries, vanilla, and citrus. Its rustic texture and glossy finish make it perfect for toast, yogurt, or desserts.
Prep Time10 minutes
Cook Time25 minutes
Total Time45 minutes
Course: Desserts & Sweets
Cuisine: French
Servings: 2 servings
Calories: 55kcal
Author: Samantha Jones

Ingredients

  • 4 cups fresh or frozen blackberries
  • 2 cups granulated sugar
  • 2 tablespoons fresh lemon juice
  • 1 teaspoon lemon zest
  • 1 vanilla bean, split and scraped (or 2 teaspoons vanilla bean paste)
  • 1 small pinch of salt
  • 1 tablespoon butter (optional)

Instructions

  • Combine blackberries, sugar, lemon juice, zest, vanilla pod/beans, and salt in a saucepan. Mix well.
  • Let sit 20–30 minutes for berries to macerate.
  • Bring to a boil over medium heat, stirring frequently.
  • Simmer 18–25 minutes until thickened and glossy.
  • Mash berries gently for rustic texture.
  • Stir in butter during last 2 minutes of cooking.
  • Test doneness by placing a spoonful on a chilled plate—jam is ready if it wrinkles slightly.
  • Strain out vanilla pod, then jar.

Notes

Use frozen berries if fresh are unavailable.
Store in airtight containers in the fridge for up to 3 weeks.
For a smoother texture, strain the jam before jarring.
Omit butter for a vegan option.