1 - ▢ Cook the sour cream in a covered saucepan on medium heat for about 5 minutes.

2 - ▢ Turn down the heat and add half of the flour and stir well with a whisk.

3 - Once the flour is fully incorporated, let the mixture continue to cook, stirring occasionally, until fat starts to release.

4 - Use a spoon to gather as much of the fat as you can in a small bowl, saving for later.

5 - (Don't worry if you can't get any fat – in that case you can add butter later.