In the work bowl of a food processor, process raspberries until smooth.
Strain purée through a fine-mesh sieve into a bowl, pressing on mixture with the back of a spoon; discard solids. Stir in sugar and lemon juice.
In a small saucepan, sprinkle gelatin over ¼ cup cold water; let stand for 1 minute. Stir over low heat until gelatin is completely dissolved. Stir into raspberry mixture.
Refrigerate until slightly thickened, about 1 hour.
Transfer raspberry mixture to a large bowl. Beat with a mixer at high speed until foamy. Gradually add cream, beating until thickened, about 2 minutes. Cover and refrigerate for up to 3 days.
Recipe by Victoria at https://victoriamag.com/miniature-meringue-tarts-raspberry-recipe/