Bloom the gelatin properly: Sprinkle the gelatin over cold water and let it fully bloom before heating. This ensures it dissolves smoothly and prevents grainy texture.
Dissolve, don’t boil: Warm the bloomed gelatin just until liquid. Boiling can weaken its setting power.
Blend gelatin into the strawberries: Incorporating the dissolved gelatin directly into the strawberry purée helps it distribute evenly for a consistent set.
Use full-fat Greek yogurt: Full-fat yogurt creates a creamier mousse and improves stability compared to low-fat options.
Fold gently: Add the whipped cream with a light hand to keep the mousse airy. Overmixing can deflate the texture.
Chill until fully set: Refrigerate for at least 2 hours so the mousse firms up while staying soft and spoonable.