Place yoghurt, flour, sugar, paste and salt into TM bowl and blend 10 seconds / speed 5
Add 200g water and blend 10 seconds / speed 5
Add final 200g water and blend 10 seconds / speed 5
Scrape around bowl
Cook 20 minutes / 100 degrees / speed 2
Add 1 tbls lemon juice and blend 10 seconds / speed 3
Check for seasoning and add more lemon juice and salt if preferred
Pour sauce into a bowl and allow to cool for an hour to room temperature
Decant sauce into a glass jar (I place it into 2 glass jars so that I can keep one in the fridge while I am using the other) and store in the fridge where it will keep for up to a week
Use as desired
NB: As the sauce sits in the fridge you may see a small amount of liquid come to the top of your container, just stir that through before serving