Squeeze the cucumber thoroughly — this is the key to thick, creamy tzatziki
Use full-fat Greek yoghurt for the best texture and flavour
Let it rest in the fridge for at least 30 minutes before serving
Keeps in the fridge for up to 4–5 days in an airtight container
Grate the garlic instead of mincing for a smoother, more even flavour
Do not freeze — the texture will not survive it