I let my kids, 8 & 9 watch his videos every once and a while. Out of most of the YouTubers out there he is the least problematic iny opinion. For the most part though I only allow educational stuff on YouTube with the occasional fun channels. Snake Discovery and anything about guitars are huge around here.
I mean some of my favorite recipes come from places other the America, which is where I live. I deal with metric all the time in cooking.
You asked which types cups/spoons or grams. It really doesn't matter. Conversation charts exist for a reason. Almost all my baking recipes are metric. I love all food, from everywhere. I love trying new things, especially food from different cultures and places. If I can find the ingredients I'll give it a try. I find food is the best way to learn about people.
Already did. In fact I made a few and am working on getting the mod teams on Reddit to make the jump. I will then hand over the Kbin that is for them. I figured it would be easier if I have a place for them to land ready to go.