Good morning! The way I have always made bottles is half the correct amount of cooled boiling water, then the powder then top up with half the water but cold boiled water so the bottle is the correct temp straight away but the powder is still "sterilised".
I have recently thought, now DD can have tap water in her beaker could I use cold tap water for the other half instead of cold boiled water? The powder would still go in boiling water and I measure the water separately, I don't just fill the bottle up as I am aware the 4oz is not actually 4oz if you know what I mean.
Anyway, any info much appreciated thanks 