This recipe is another very easy and super quick meal to make that tastes great and is budget friendly.It is on the table in about 30 Min's. I served these on bagels last night but serve with what ever bread you fancy I usually serve mine on Turkish bread but I couldn't get any yesterday. I list 250g of tzatziki as this is the weight of the store bought brand that I buy. Sometimes I do have leftovers, but it does keep in the fridge and you can use the leftovers to dip vegetables in for a nice healthy light lunch the next day. Note: Sumac: A purple-red astringent spice ground from berries growing in the Mediterranean; adds a tart, lemony flavour to food.