Step 1

Slightly warm 1 cup heavy cream to room temperature in a saucepan

Step 2

Add 1 Tablespoon buttermilk to the pan and mix well

Step 3

Add mixture to a jar and lightly cover

Step 4

Keep jar on counter (or in warm place) for the next 12-24 hours.

Step 5

Fasten lid tightly and refrigerate

Step 6

In a few hours it will thicken even more

Step 7

Add the juice of 1/2 lime and a generous pinch of salt to the jar and mix well

Step 8

Taste for seasoning

Step 9

Serve immediately or store in the fridge