- 1/2 cup nasturtium flower petals
- 1 pinch salt
- 1/4 cup unsalted butter, at room temperature
- Smash flower petals with a pinch of salt in a mortar and pestle until a paste forms.
- Stir butter and smashed petals together in a bowl until well-combined.
- Place butter in the center of a piece of plastic wrap, wrap the butter, roll into a small log shape, and refrigerate until firm, at least 30 minutes.