MAM Bottles

Microwaving isn’t recommended because it doesn’t heat the liquid equally so can increase the risk of burning your baby’s mouth. I know plenty of people do use that technique though, I don’t personally.
The safest way is hot water in a jug and then test the temp on your wrist before feeding it to baby x

Defo don’t microwave as it can cause hot spots in the milk. We literally run ours under hot tap or pop it in a jug, if you get them used to having it luke warm or even cool it’s a game changer and so much easier in a hurry in the night waiting for the hot tap to heat up!

I use mam, we put a hot shot in with the formula and put the rest of the water in our nuby rapid cool to then add to the bottle. Cools it down in 40 seconds to the perfect temperature, I personally wouldn’t recommend microwave for the above reasons x

I know you said you don't want to buy a bottle warmer but what about a prep machine ( people will be for and against this so make your own judgement, I'm onto my 3rd child using one and never had any issues )

Just commenting again to add I also use the hot shot method Taikeihsa said about and it’s so quick and easy - quicker than heating up a pre-made bottle!

Put it in a jug of warm water or run it under warm water for a few minites

If making up fresh you won’t need to warm it up as it’ll already be warm.

If you are warming up ready made or expressed breast milk you can just sit in a jug of warm water but make sure you take the top off (the whole screw but not just the cap) as they suck up water otherwise

We used to have a bottle warmer and it was essentially just a jug of boiling water so you may as well put the bottle in an equivalent for a few mins. If you're using stored breastmilk in bags, I found that they heat up really quickly so tend to just warm the bag under hot running water then pour it into the bottle.

1. NEVER shake the bottle.
2. I use Mam bottled and also microwave her milk when it’s the middle of the night but usually I use the Tommie Tippee bottle warmer and that works just fine

Get a bottle warmer that’s what I use

Seconding to never shake!! we used the Dr browns formula pitcher to prepare the day’s formula and then put it in the microwave just enough to get the chill off, swirled it, and tested it of course. It doesn’t have to be warm, should just feel like almost nothing touched your skin.

Water takes forever to heat mam bottles because of the thick bottom.
If you don’t have/wanna buy something like a formula pitcher, mixing with a fork after warming the water always gave us good results.

I use a prep machine,
Makes to the perfect temperature x