1. Bring a large pot of salted water to a boil and add the spaghetti. Cook according to the instructions until al dente. Drain through a colander and set aside.

2. While the pasta is cooking, start the bacon: In a large, deep skillet or braising pan set over medium heat, add the bacon. Cook until the bacon is crisp, about 5 minutes. Add the shallot and cook until translucent, about 3 minutes. Stir in the garlic and cook, stirring constantly, for 30 seconds. Add the clams in an even layer and top with the tomatoes. Pour in the beer and use a wooden spoon to scrape up any bits that have stuck to the bottom of the pan. Cover the pan and steam until the clams begin to open, 8 to 10 minutes.

3. Reduce the heat to low and add the butter, sherry vinegar and basil. Stir to incorporate and once the butter is melted, add the cooked spaghetti and gently toss with the clams and sauce. Sprinkle with more basil and serve.