Try this Guava Butter recipe, or contribute your own.
Many cooks fail to achieve a proper fruit butter consistency because they rush the reduction phase over too-high heat, scorching the sugars instead of evaporating excess moisture. Reaching a thin spreading consistency requires patience, maintaining a gentle simmer while stirring constantly over low heat to prevent burning at the bottom of the pot. Pressing the softened guavas through a fine sieve removes the seeds and fibrous pulp, leaving behind a smooth base that yields approximately two quarts of purée. Reducing the apple cider by half concentrates its natural acidity and sugars before it joins the guava, sugar, cloves, allspice, cinnamon, and nutmeg in the main pot. Processing the filled jars in a boiling waterbath canner for ten minutes ensures a safe seal for long-term pantry storage. Adjusting the batch size up or down requires keeping the proportions of fruit purée to sugar consistent, though smaller quantities will thicken faster on the stovetop.