I want to show you some of the many Thai drinks we have, and try to recreate the flavours of them. This one has a smooth cream soda like taste with a slight acidic after taste. The ingredients list says soda, sugar and a little drinking yoghurt, but when I tried that it didn't work. After some experimentation I found that full yoghurt is needed to get the creaminess, and that a squeeze of lemon juice adds the bite.

Ingredients
500 ml Soda Water
50 ml Sugar Syrup
4 Tablespoons Yoghurt
Squeeze Lemon Juice.

Preparation
1. Use a thick sugar syrup, you don't want to dillute the soda too much.
2. Chill all the ingredients.
3. Mix the yoghurt and sugar syrup, then stir it into the soda, then add a squeeze of lemon juice. Not too much lemon or the yoghurt will curdle.
4. Serve immediately.