Orange Marmalade
Because the pectin that makes marmalade gel comes from the pith, which is also the bitter part of the fruit, it can be tricky to get one without the other. Adding sugar doesn’t make the taste less bitter; it just makes it more bitter-sweet. The easiest solution is to zip the colorful part of the citrus peels off with a peeler and halve the fruit, squeeze the juice and pull out the pulp, giving it a rough chop, and then compost the pith. In that case, you’ll need to use store-bought pectin as a thickening agent.