Prepare the butter
Bring a large pan of water to the boil. Meanwhile, in a separate pan, melt 125g butter along with 1 tbsp olive oil. Pick the leaves from 25g sage. When the butter is foaming, toss in the sage leaves and cook for 1-2 minutes or until the leaves crisp up. Using a slotted spoon, remove them from the butter and set aside. Keep the butter on a low heat.