Ingredients
1 1/2 cups fresh orange juice (about 3 medium oranges), poured through a fine sieve, pulp discarded
1/2 cup Campari or pink grapefruit juice
1 cup sugar
3 tablespoons plus 1 teaspoon unflavored gelatin (about 5 quarter-ounce envelopes)
1 1/2 cups Champagne or sparkling white wine
1 tablespoon fresh lemon juice
Preparation
Stir together orange juice, Campari, and sugar in a medium saucepan. Sprinkle with gelatin; let soften 1 minute.
Cook gelatin mixture over medium-low heat, stirring gently, until sugar and gelatin are dissolved, about 2 minutes. Pour mixture through a fine sieve into a stainless-steel bowl. Stir in Champagne and lemon juice; let stand 5 minutes.
Using a slotted spoon, skim foam from surface. Pour mixture into a 4 1/2-cup fluted gelatin mold. Refrigerate until firm, about 4 hours or overnight.
To serve, carefully set mold in a bowl of hot water for 5 seconds. Invert gelatin onto a serving platter.
