We have a glut of grapefruit at the moment. There were really high winds in the last couple of weeks and heaps of our fruit fell off the tree so I've been trying to make something with them. I've got a grapefruit cake recipe, but the juice of 2 grapefruit isn't going to cut it. So far I've made grapefruit cordial.
1 1/2 C sugar
25g citric acid
1.2 L water
Dissolve sugar and citric acid in boiling water. Stir in juice and rind of the 3 grapefruit. Dilute to taste (about 3 parts water to 1 part syrup).
This cordial is great, because it doesn't have any artificial colours or preservatives (the citric acid is a preservative, but its natural).
So that has knocked off a few of my grapefruit, and I have tried my utmost to foist them on everyone I know, but most people have their own trees, or don't like them. I'd just eat them all the time, but they give me hives (I still love them, they just don't love me back).
If anyone has any other grapefruit intensive recipes, please let me know.