Try this:
1 ts gelatin
1 tb cold water
2 tb boiling water
� cup sugar
� cup cocoa
1 cup whipping cream
1 tb vanilla
Sprinkle gelatin over cold water & let it stand till soft. Stir in boiling water till dissolved. Mix sugar and cocoa in a bowl. Add cream and vanilla. Beat till stiff peaks form. Fold in gelatin mixture and chill. Eat. (Conversions to Imperial here:
http://www.thefoody.com/glossary/convert.html )
Or try softened gelatin with whipped cream, cream cheese beaten with cocoa powder or melted chocolate, and vanilla. You can make a digestive biscuit base for this - crush bics with melted butter and sugar in a pie case, fill with the topping, chill to set and serve with decoration on top - almonds, choc swirls, etc.