A quick recipe for one bottle of marmelade, I use it to avoid canning - just put it in any bottle and refrigerate after making. It's best when it's first made though, and still warm. I like my marmelade tart - if you find it's too sour for your tastes, just use more sugar. Note: you don't need any gelatin, there's plenty of natural gelatin in the peel of all citrus fruits.
- Slice the grapefruit very very thinly with a sharp knife, into flat slices. then cut these into strips, and cut the strips into smaller bits. Keep all the juice that flows out, if it's a juicy grapefruit.
- Bring 6 cups of water to a boil, and then add the grapefruit slices and juice.
- Keep at a low boil, adding the sugar. Continue boiling for quite some time (20-30 minutes), until it begins getting thicker.
- The tricky part is knowing when to stop boiling. If you wait too long, it will become too thick when it cools. The important thing to know is it thickens a bit when cooling, so you have to stop it before it reaches the desired consistency. I put a porcelain dish in the fridge, then pour a little onto the dish - if it congeals a little, then it's ready.
- Before you bottle it, eat it with bread while it's still warm - it's delicious!
- Pour in any clean bottle, and refrigerate.