Wash the strawberries. Gently pat dry, and hull all but 4 (reserve for decoration).

Mix the hulled strawberries, lemon juice and sugar, and crush the strawberries slightly with a fork to release some juice.

In a separate bowl, beat the mascarpone with a whisk.

Pour the strawberry soup into martini glasses, and top with a dollop of mascarpone. Decorate each glass with a strawberry and a sprig of mint.