Prep the vegetables: Slice the leeks (or onion), and dice the potatoes.
2 medium potatoes, diced, 1 small onion diced, 3 baby leeks, sliced (or you can substitute with just 1 onion and no leeks)
Start boiling: In a large pot, bring 5-6 cups of water to a boil over high heat. Once boiling, add the salt, sliced leeks, and diced onion. Let it boil for 2 minutes.
5-6 cups water (about half a pot, enough to cook pasta), 1 tablespoon salt
Add the potatoes: Stir in the diced potatoes, and cook until they’re just about fork-tender.
Add the pasta: Once the potatoes are nearly tender, add the dry pasta to the pot. Cook according to package instructions, but keep in mind you may need a bit more time to get the pasta soft, not perfectly al dente.
1 2/3 cups dry ditalini pasta (160g) 1- 2 cups also works
Add peas: When the pasta is nearly done (after about 7 minutes), add the frozen peas to the pot and cook for an additional 5 minutes.
1 1/2 cups frozen peas
Finish with olive oil: Drizzle in the olive oil in 3 parts: once after adding the potatoes, again after adding the pasta, and finally with the peas. Stir gently to combine.
3 tablespoons extra virgin olive oil, plus extra for drizzling
Adjust consistency: If you find the water too thin, you can make a quick slurry (mix a tablespoon of cornstarch with a little water) and stir it in. This will thicken the broth. (Use the water from the pot)
Serve: Taste and season with freshly ground black pepper, and optional grated parmesan cheese. Serve warm for the best consistency!
Black pepper, to taste