The red guava popping boba that comes in a small jar is good for home entertaining friends and family. It is a safe ingredient to add to any of your favorite treats because it does not contain a single ounce of artificial preservative in it. These popping pearls contain red guava juice extracted from the fruit. Its basic ingredients are water, red guava puree and sugar. It has its health benefits because it is high in vitamin c and calcium with low contents of calories and fat and has no cholesterol in it.