You learn many different skills if you stay in a family from a different culture! Today, I learned a shockingly-simple method of making yogurt yet, unknown to me until now.
You can turn to milk easily to yogurt with a bit of yogurt by just adding a bit yogurt to your milk and let the backeria work for you, the next morning you got up. The yogurt is ready!
Because yogurt is very expensive in Singapore, my Indian host mum told me it saves her some grocery money.