Standard formula advice tends to say something like:
- Fill the kettle with at least 1 litre of fresh tap water (don’t use water that has been boiled before).
- Boil the water. Then leave the water to cool for no more than 30 minutes, so that it remains at a temperature of at least 70C.
I am aware that you need to put the formula powder into the water when it is at least 70C so that any bacteria in the formula will be killed.
But is there a maximum temperature? Is it OK to mix the formula immediately after the kettle has boiled? Should I wait until the temperature has dropped below 90C? 80C?
I've failed to find any advice about this. (Also, why is it 1 litre when I'm only making 200ml of formula?)