Cooking dried pasta ought to be straightforward: boil water, add pasta and wait. The details make the difference between firm, separate pieces that hold sauce well and an overcooked heap that sticks together. You need enough water, a steady boil, a timer and one final taste before draining.
For an ordinary serving, Good Food suggests around 80–100g of dried pasta per person, with roughly 500ml to one litre of water for each 100g. Those numbers are useful for planning, but the packet's instructions for the particular pasta shape remain the starting point.
Choose a saucepan with room to boil
Pasta swells as it cooks and needs enough room to move around. Use a large high-sided saucepan that can hold the water and pasta without threatening to overflow.
Fill it with cold drinking water, leaving space at the top. Good Food's water guidance provides a useful range rather than requiring you to weigh every litre.
Bring the water to a proper rolling boil before adding dried pasta. Starting ordinary spaghetti in lukewarm water without following a specific recipe can lead to uneven softening and sticking.
Keep children away from the hob, position the handle safely and be careful when carrying a pan filled with boiling water.
How much pasta should you measure?
For a simple main meal, 80–100g dried pasta per adult is a common guide. The amount can change depending on appetite, the richness of the sauce and whether pasta is the main event or a side.
Kitchen scales are the easiest way to portion spaghetti and other long shapes. A handful measurement can vary significantly between people.
Fresh pasta, filled pasta and gnocchi have different serving sizes because they contain moisture and other ingredients. Use their individual pack guidance.
Cooking exactly what you need can reduce leftovers and help you avoid storing large amounts of dressed pasta that nobody wants the following day.
When should you add salt?
Salt is usually added to the water while it heats or just before the pasta goes in. It seasons the pasta during cooking, which is easier than trying to fix a bland batch after draining.
Good Food suggests around a teaspoon or more of salt depending on the quantity and recipe. You can adjust for dietary needs and the saltiness of the sauce.
You don't need to make the water extremely salty. A well-seasoned sauce, cheese or cured meat may already contribute plenty of salt to the finished dish.
If cooking for someone with medical dietary restrictions, follow the appropriate guidance rather than assuming every kitchen uses the same amount.
Do you need oil in the boiling water?
Some recipes use a splash of oil, but it's not essential for ordinary dried pasta. The more useful habits are boiling enough water, stirring after adding the pasta and avoiding overcooking.
Oil floating on the surface may also make it harder for some sauces to cling to the pasta after draining. Save your olive oil for the sauce if that suits your recipe.
Stir spaghetti during the first minute, when the strands are most likely to stick together. For short shapes, move the pieces gently around the pan with a suitable spoon.
You don't need to stand stirring constantly. Keep an eye on the boil and move the pasta again if pieces begin collecting at the bottom.
How long does pasta take to cook?
This depends on its shape, thickness and whether it is dried or fresh. Good Food gives roughly eight to ten minutes for many dried ribbon shapes and ten to twelve for some short, thicker shapes.
Fresh pasta and filled pasta may take only a few minutes. Follow the package and start checking before the stated time ends.
Set a timer when the pasta goes into the boiling water. The timer reminds you when to taste; it shouldn't replace checking the actual texture.
If the pasta is to finish cooking in a hot sauce, consider removing it from the water slightly earlier so it doesn't become overcooked during the final stage.
What does al dente actually mean?
Al dente means cooked but retaining a little bite. The pasta should no longer have a hard, raw centre, yet it shouldn't collapse into a completely soft mass when you chew it.
Fish out one piece, let it cool enough to taste safely and bite it. Compare with the texture you want for the finished dish.
Some people prefer softer pasta, particularly for a family meal. That's a preference rather than a mistake, provided the pasta is properly cooked.
Different shapes will not necessarily be ready at the same time. Mixing two kinds with different timings in the same pot makes it harder to achieve an even result.
Save some pasta water before draining
Just before the pasta is ready, scoop out a cup of the hot cooking water using a heat-safe mug or ladle. This water contains starch from the pasta.
A small amount can help loosen a thick sauce while allowing it to coat the pasta. Add it a spoonful at a time until the mixture becomes glossy and moves easily in the pan.
You don't have to use the entire cup. Keeping a little available gives you more control if the sauce turns out too thick.
The water is hot and may contain salt, so handle it carefully and taste the finished sauce before adding more seasoning.
Drain the pasta safely
Put a suitable colander in the sink, away from anyone who might be splashed. Turn off the hob, lift the pan securely and pour slowly so boiling water cannot run over your hands.
For spaghetti, a pair of appropriate tongs can sometimes transfer the pasta directly into a sauce pan without using a colander.
Avoid rinsing ordinary hot pasta under cold water if you want to coat it in a warm sauce. Rinsing can remove starch that helps sauce cling.
There are exceptions for specific cold salads or other recipes that instruct you to cool pasta quickly. Follow the recipe for the finished dish.
Combine pasta and sauce while it is hot
Rather than putting an enormous pile of plain pasta on the plate and spooning cold sauce on top, try tossing it with the sauce in a pan.
Add the drained pasta, a splash of reserved cooking water if needed and the rest of the sauce ingredients. Toss gently over appropriate heat until coated.
Don't keep simmering it after the pasta has reached the desired texture. A quick finish is often enough.
Some delicate sauces, especially those thickened with cheese or egg, need lower heat or no direct heat to avoid splitting or curdling.
Common pasta problems
Pieces stick together: Use enough water and stir shortly after adding the pasta. Avoid leaving it drained and uncovered for a long time.
Pasta is too soft: Begin testing earlier and stop the cooking sooner.
The sauce is dry: Add a little reserved starchy water while tossing the pasta.
Spaghetti is unevenly cooked: Let the ends soften and sink into the water, then stir to submerge it all.
Once you have a pot size that works, cooking pasta becomes repeatable. Measure the portion, taste near the end, reserve some water and finish the pasta in its sauce rather than leaving it waiting in the colander.
Sources reviewed
Good Food: how to cook pasta and Food Standards Agency: chilling and freezing food safely.