What is the ratio of knox to fruit juice?

The ratio of Knox Gelatin to fruit juice generally depends on the specific recipe or desired consistency. For a basic gelatin dessert, a common ratio is 1 packet of Knox gelatin (about 2.5 teaspoons) to 2 cups of fruit juice. However, this can vary based on personal preference or the type of fruit juice used, so it's best to follow a specific recipe for accurate results.