Preheat oven at 425℉/218℃ and line two baking sheets with parchment paper
Gather all ingredients
Trim off the fuzzy bottom of the leek and dark green leaves until only the light green and white portions are left.
Slice the leek in half and rinse thoroughly
Continue to slice leeks into logs the length of your thumb
Coat the leeks in 1 TBS olive oil and ½ tsp salt. Place them on a baking sheet
Place strips of bacon onto another baking sheet
Bake both in the oven for 30 minutes. The bacon should be crispy.
When done, allow the bacon and leeks to cool until you can handle them with your hands; approximately 10 minutes.
In the food processor, place the leeks. Break the bacon strips in half and place them in a food processor with the leeks. Pulse on low until well incorporated
Scoop out the leek and bacon into a mixing bowl and add the softened stick of butter. Mash ingredients together but do not overmix. We do not want the butter to be melted.
Lay out a large piece of cling wrap on the counter. Scoop out the combined butter mixture onto the cling wrap an inch in from the edge that's closest to you. Take the edge of the cling wrap closest to you and fold over the butter. Massage the butter into a log and begin to roll it over and over until completely wrapped. See the picture above for reference.
Chill until butter has hardened, about 1 hour. Slice into coins before use.