Sprinkle gelatin over cold water, add boiling water, and stir until dissolved. Add vinegar, onion, salt, and food coloring; refrigerate until slightly thickened. Stir in grated cucumber and pimientos.
Pour into 8 1/2-cup individual molds or 1 4-cup ring mold. Chill 4 hours, or until very firm. Serve jelly as accompaniment to cold meat or fish.
back to the Cucumber Recipe File!