Tzatziki is a mediterranean or greek sauce or dip that is traditionally made with strained yogurt and cucumbers. It is used in greek dishes such as gyros or greek salads as a dressing as opposed to other condiments. It is also served with meats or with pita bread accompanying a beef, lamb, fish or chicken sandwich. This dairy-free version uses soy yogurt and strains it through a cheesecloth to thicken it. Try this recipe with vegan friends or for a party to add some newness to traditional dishes. Tzatziki can be eaten at breakfast, lunch, and supper.