Potato salad with mayonnaise

Peel the potatoes and cut into small cubes. Boil them in salted water until they are soft but not crumbled. They are usually cooked for about 20 minutes, but always check their softness with a fork before removing them from the heat.

While the potatoes are cooking, hard boil the eggs. This takes about 10 minutes from the moment the water starts to boil.

Finely chop the onion and add to the bowl. Then add mayonnaise, mustard and vinegar. Mix everything well.

When the potatoes and eggs are cooked, let them cool down a bit. Then cut the potatoes and peeled eggs into cubes and add to the bowl with the other ingredients.

Finally, add salt and pepper to taste and add chopped vegetables if you have them. Mix everything well and refrigerate for at least an hour before serving. This salad is best when it has had time to chill so that the flavors really meld together.