Guava is a tropical fruit with flavorful juice and edible seeds. High in Vitamin C, guava juice is found in everything from smoothies to stew. It's used to add flavor and moisture to your food. Replacing it means finding substitutes that provide the appropriate amount of flavor and moisture. Although you cannot mimic the true flavor of guava with any replacement, finding a general substitute for guava juice is an easy task with many possibilities. Whatever you choose, use it cup to cup for guava juice to ensure the proper liquid content in the recipe.
Tropical juices, such as mango and papaya, are an ideal substitute for guava juice. All three fruits have a sweet and musky flavor. While each one has a distinct taste, they do work well as replacements for one another. Pineapple juice is slightly sweeter than guava, but has a bold flavor that also works well as a substitute.
Citrus juices have a slightly more acidic taste than guava, but they also have a strong flavor that blends well with many other ingredients. Lemon and lime juice are a particularly useful guava juice substitute if you're trying to add a tart twist to a recipe. Add a little sugar to the lemon or lime juice, or just use lemonade or limeade, if you're worried about it being too tart. Orange juice and ruby red grapefruit juice are particularly good replacements for guava juice if you're looking for something to sweeten the recipe while adding a little acidic bite.
Apple juice has a very light taste that works well if you're trying to add a mellow background flavor to a recipe. The apple juice is far lighter in taste than guava juice, but it does provide flavor and moisture. Peach, nectarine and apricot juices all have a sweet flavor and are almost as potent in taste as guava juice, making them suitable substitutes. Strawberry and raspberry juices also provide ample flavor when used as a guava replacement.
Water is a possible substitute for guava juice, but only in emergencies. You'll get all the moisture your recipe needs, but you'll have to sacrifice the flavor. For the best results, stir a few tablespoons of granulated sugar into the water to retain the sweet aspect of the juice. You can also use water to turn a small amount of regular juice into a larger quantity of diluted juice. The flavor will also be diluted, but the method works in a pinch.