Name: Cultured Butter
Yield: About 1 cup butter + 1 cup buttermilk
Ingredients: 2 cups heavy cream (not ultra-pasteurized); 2 tablespoons cultured buttermilk or crème fraîche (as your starter); 1/4 teaspoon fine sea salt (optional, for salted butter); *Equipment:**; A stand mixer, food processor, or a jar with a tight lid and a strong arm

Butter made from cultured cream has a depth of flavor that regular butter can't match — tangy, complex, and rich. And you'll have real buttermilk as a byproduct (not the thick stuff from the store, but the traditional thin, tangy liquid that's incredible for baking).

Ingredients

2 cups heavy cream (not ultra-pasteurized)
2 tablespoons cultured buttermilk or crème fraîche (as your starter)
1/4 teaspoon fine sea salt (optional, for salted butter)
*Equipment:**
A stand mixer, food processor, or a jar with a tight lid and a strong arm

Method

**Culture the cream**: Pour the cream into a jar, add the buttermilk or crème fraîche, stir, and cover loosely. Leave at room temperature for 12-24 hours until thickened and tangy (this is essentially crème fraîche).
**Chill**: Refrigerate the cultured cream for at least 1 hour. Cold cream churns better.
**Churn**: Pour the chilled cultured cream into a stand mixer with the whisk attachment (or food processor, or a jar you can shake). Beat on medium-high speed. It will go through stages:
Soft whipped cream (2-3 minutes)
Stiff whipped cream (4-5 minutes)
Grainy, curdled-looking (6-7 minutes)
**Suddenly**: the butter solids will clump together and liquid (buttermilk) will splash out. This is the moment. Stop.
**Drain**: Pour off the buttermilk into a jar — save this, it's real cultured buttermilk and it's gold for baking.
**Wash the butter**: Add 1/2 cup of ice-cold water to the butter in the bowl. Knead and press with a spatula or your hands. Pour off the cloudy water. Repeat 2-3 times until the water runs clear. This removes residual buttermilk and extends shelf life.
**Season**: Knead in the salt if using. Form into a log, wrap in parchment paper, and refrigerate.

Notes

Cultured butter is what most of Europe considers "normal" butter. Sweet cream butter (the American default) is the exception, not the rule.
Add mix-ins during the kneading step: fresh herbs, roasted garlic, honey, or cracked pepper.
The buttermilk from this process is different from store-bought — it's thinner and more tangy. Use it in pancakes, biscuits, marinades, or salad dressings.