Donnington Brainstorm
1.
Prepare the grapefruit peels by first removing any of the white pith.
2.
Add the peels and the lemon juice to a blender and blend well.
3.
Pour 50 mL of the mixture into a small saucepan and add the agar-agar.
4.
Heat on medium and whisk until the agar-agar has dissolved.
5.
Take off the heat and slowly add the rest of the juice solution.
6.
Place in freezer until a gel forms.
7.
Strain through a cheesecloth and bottle.
8.
Will keep for a couple of days.
"Clarified Lemon Juice with Grapefruit Peels" is also an ingredient for other cocktails.