Boil the pasta: Bring a large pot of salted water to a boil. Cook linguine until just shy of al dente.
Reserve 1 cup of pasta water, then drain.
Sauté the aromatics: In a large skillet, warm 2 tablespoons olive oil and 2 tablespoons butter over medium heat. Add minced garlic and a pinch of red pepper flakes. Cook 30–60 seconds until fragrant, not browned.
Deglaze with wine: Pour in the white wine, scraping the pan.
Simmer 2–3 minutes to reduce by about half.
Add clams and juices: Stir in canned clams with their juices. Simmer gently for 2 minutes. Season with black pepper and a little salt if needed.
Build the sauce: Add the drained linguine to the skillet.
Toss with tongs, adding splashes of reserved pasta water to create a silky, glossy sauce that clings to the noodles.
Finish with brightness: Stir in another pat of butter, lemon zest, and a squeeze of lemon juice. Toss in chopped parsley.
Taste and adjust: Add more lemon, pepper, or pasta water until it’s balanced and saucy. If using Parmesan, sprinkle lightly and toss.
Serve right away: Plate hot, with extra parsley, pepper, and lemon wedges on the side.