# Method:
01 - Wash guavas thoroughly under running water. Cut into quarters and remove seeds with a spoon, preserving as much flesh as possible.
02 - Place guava flesh and water in a large saucepan. Bring to a boil, then reduce heat and simmer for 15-20 minutes until fruit is completely soft.
03 - Mash softened guavas using a potato masher or briefly blend for smoother texture. Press mixture through a fine sieve or food mill to remove remaining seeds and obtain smooth pulp.
04 - Return pulp to saucepan. Add sugar and lemon juice. Stir thoroughly to combine all ingredients.
05 - Bring mixture to a boil over medium-high heat, stirring constantly to prevent sticking. Reduce heat to medium and simmer, stirring frequently, until mixture thickens to jam-like consistency, approximately 35-45 minutes.
06 - Place small amount of preserve on a chilled plate. If mixture wrinkles when gently pushed, it has reached proper setting point.
07 - Skim off foam as needed. Pour hot preserves into sterilized glass jars, leaving 1/4 inch headspace. Seal jars immediately.
08 - Allow jars to cool completely at room temperature. Refrigerate for up to 3 months, or process in boiling water bath for extended shelf life.