Spaghetti with Butter and Anchovies

Method

1. Bring a pot of salted water to a boil and cook the spaghetti.
2. In a large pan, melt a good piece of butter over low heat and add the anchovies. Stir until they dissolve.
3. Add a splash of pasta cooking water to the pan. Be careful with salt as the anchovies are salty.
4. Drain the spaghetti al dente and transfer them to the pan with the butter and anchovies.
5. Toss the pasta over low heat, adding more pasta water if needed, until the sauce emulsifies and coats the spaghetti.
6. Remove from heat and add lime juice and zest to taste. Toss to combine.
7. Plate the spaghetti and garnish with additional lime zest or slices.