Let the butter soften. Wash the wild garlic leaves, remove the stems and dry them very well. Grate the parmesan.
Cut or tear 30 g wild garlic leaves into pieces. Puree with the parmesan, a pinch of salt and some freshly ground pepper with the hand blender. If you like, you can also add some chili powder. Add soft butter in portions and puree to a homogeneous mass. Pour into a tightly fitting container and let it steep, preferably overnight.
For the frozen food, form rolls in cling film and freeze.