For the Tzatziki we will need:

0.500g greek style yogurt
1 cucumber
3 tbsp olive oil
1 1/2 tbsp vinegar
1/2 tsp salt
A bit of pepper
1-2 cloves of garlic

In a bowl we mix the oil, vinegar, salt, pepper and the garlic squeezed or chopped in tiny pieces. We peel and grate the cucumber with large holes of the grater. We squeeze the grated cucumber until all its water is out and we mix it with the yogurt mixture. We decorate according to the dinner party theme.