Preheat your oven to 400°.

Trim, halve and slice the leek into half moons. Place the leek slices in a bowl of water and swish them around, breaking them up with your fingers. The sandy dirt will fall to the bottom. Remove the leaks, drain and pat dry.

In a small skillet over medium heat, melt the butter. Once melted add in the clean leeks. Cook until softened about 10 minutes. Season with salt and pepper and remove the skillet off of the heat.

In a separate bowl, combine the cream cheese, mayonnaise, two-thirds of the grated cheddar and the beer. Add in the cooked leaks and stir until smooth.

Spread the leek dip into the same small oven-safe skillet {or a 1-1/2 to 2 quart baking dish) and top with the remaining grated cheese.

Bake in your preheated oven for 20-25 minute or until bubbly and lightly golden.

Let the dip cool before serving.