The directions for Holle baby formula say to boil water, let it cool, put 2/3 of the water into the bottle, then add the formula, then add the remaining 1/3 of the water.

Is it necessary to add 2/3 of the water, then the formula, then the remaining 1/3 of the water? Or can we just add the full water amount and then the formula?

  • organicstart.com/preparation-feeding-holle-1 says your wife is right. Having some awareness of chemistry I'm pretty sure it will not explode if you do it wrong, and I suspect it will still provide some nutrition though. – user26011 Jan 16 '18 at 21:11
  • If your tap water is safe to drink, you don't have to boil it either. It's a million times easier if your baby is used to drinking formula made with room temp water from the tap. As long as the bottle has enough room to shake the formula properly, you don't have to add the water in stages. – swbarnes2 Jan 16 '18 at 22:21

That's only helpful if your bottle is too full with the full amount of water, making it hard to dissolve the formula by shaking. If that's not the case (i.e., there's enough air above the water+formula), there's no need to fill the bottle in stages.

Reading the company's instructions (pointed out by not store bought dirt) we can also see that they advice against using microwaved water, which is not fact based - so I'd take whatever they say with a grain of salt. Also, as swbarnes2 mentioned in the comments, if your kid is old enough you would do a great favor to yourself by using water at room temperature and, if safe, from the tap.

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