Use guavas that are soft and free of spots or blemishes.

You could substitute your favorite low-calorie or natural sweetener for the sugar.

You can discard the tiny, hard seeds that are left in the strainer.

You can discard the seeds that are left in the strainer.

If you don’t have a cocktail shaker, you could just whisk the ingredients together in a bowl or measuring jug.

If you like thicker guava juice, just use less filtered water.

For example, if you like thick guava juice, you may only want to add a little more water. If you prefer a thinner guava juice, try adding another cup or 2 (240 to 480 ml) of water to the guava.

For a colder drink, add a few ice cubes to each glass just before you serve the drinks.