Beet Mold

1 (16 ounce) can shoestring beets
1 small box lemon gelatin
3 tablespoons vinegar
1/2 teaspoon salt
1/2 cup grated cucumber
3 tablespoons grated onion

Drain beets; reserve juice. Heat juice with enough water to make 1 cup. Dissolve gelatin in hot liquid. Combine all ingredients. Pour into oiled mold and chill until firm.