Cold water just makes the powder clump up at the bottom of the glass. Lukewarm lets everything mix in smooth right from the start. I test it by putting a drop on my wrist, same as for a baby bottle. If it doesn't feel hot or cold, it's the perfect temp for mixing.

This reminds me of how many green ideas add hassle to daily life. Green roofs save energy and help wildlife, but yes, they demand regular cleaning and fixes. We have to decide if the long-term good is worth the short-term chores.

My apartment's the same way, honestly. I keep telling myself I'll resell stuff but it just becomes a new pile.