I use the George Calombaris recipe but using the method from the EDC. I also used my strained homemade greek style yoghurt which is very thick. If you do a google search you will find quite a few different recipes but I think I got this one from his cookbook.
1 cucumber, peeled, deseeded and grated
400g thick Greek-style yoghurt
3 cloves garlic, roasted and pureed
30ml white vinegar
40 extra virgin olive oil
1 tablespoon dill, shredded
salt to taste
Sprinkle the cucumber with 1/2 teaspoon salt. Leave grated cucumber overnight (or at least a few hours) in colander to extract excess juices.
Place yoghurt, garlic, vinegar, extra virgin olive oil and dill into a large bowl.
Squeeze liquid from cucumber and add to yoghurt.
Mix well and season to taste.