Passion Fruit Curd

Pour an inch or two of water into the base of your double boiler (a medium sized saucepan will do if you don't have one) and bring to a boil. Then reduce heat and let simmer.

Add the eggs, sugar, passion fruit, and salt to a non-reactive bowl or double boiler and whisk until combined and smooth. Place the bowl on your double boiler base and whisk continuously until it starts to thicken. This should take about 8-10 minutes.

Add one piece of butter at a time and continue to whisk continuously until it's all incorporated. This may take a few minutes.

Remove from heat and strain into your jar or container of choice using a fine mesh sieve. Place a piece of plastic onto the top of the curd. It should actually be touching the curd. This will prevent a skin from forming on top. Once it's cool, remove the plastic wrap and add a lid. Then refrigerate.