As a side note, when I am in a hurry, I sometimes make this recipe without straining the yoghurt. It is still delicious however it is less thick than my mom's.
Ingredients
1 cup Greek plain yoghurt (make sure that it is true Greek yoghurt with no added thickening agents or additives)
¼ English cucumber, grated
2 garlic cloves, pressed through a garlic press
2 tablespoons white vinegar
3 tablespoons olive oil
Salt to taste
Instructions
Unless you have access to a Greek or Middle Eastern grocery store where strained yoghurt is available, you will need to strain your yoghurt overnight. To do this, line the inside of a sieve with four layers of cheese cloth and place over a bowl. Dump the yoghurt in the sieve and place it in the fridge overnight.
The next day, grate the cucumber and with your hands squeeze out excess water.
In bowl, combine the strained yoghurt, cucumber and the rest of the ingredients. Mix well with a spoon. Adjust the amount of garlic, vinegar and/or salt according to your taste. Enjoy!
Recipe by Swine + Wine at https://www.swineandwine.ca/tzatziki-greek-yoghurt-garlic-sauce/