To make jelly, first, wash and clean the fruit of your choice, remove stems, seeds, and any damaged parts. Place the fruit in a large pot with enough water to cover it, then heat it on medium-high till it starts to simmer. Next, reduce the heat and simmer the fruit for around 20-30 minutes, or until it becomes soft and mushy. Next, pour the fruit mixture through a fine sieve into a large bowl to remove any remaining solids. Measure the resulting liquid and pour it back into the pot. For every 1 cup of juice, add ¾ to 1 cup sugar, stirring continuously until the sugar dissolves. Bring the mixture back to a boil for another 15-20 minutes, and if needed, skim off any foam. Once the mixture reaches the gel point, pour it into jars and let it cool for a few hours. Once cooled, the jelly is ready to serve.