Add <quantity>1</quantity> egg yolk to a large bowl

Add <quantity>1<unit>tbsp</unit></quantity> of dijon mustard and <quantity>1<unit>tbsp</unit></quantity> of vinegar

Whisk to combine. Add <quantity>1<unit>cup</unit></quantity> of vegetable oil in a thin stream while whisking until smooth and creamy

Add salt to taste and mix to combine. The mayonnaise is ready

Enjoy it as a base to other dressings or in your favorite dish!