July 11. Start out with organic heavy cream:

Whirl in the mixer

until the solid and liquid separate

Pour out the liquid (this is now BUTTERMILK, which you can use in other recipes like pancakes and scones, etc.)
Mix the solids with some organic expeller-pressed canola oil (to the consistency you desire) and a bit of salt (just the teeniest bit!)

There you have it: yummy golden butter from your mixer, no preservatives, no artificial coloring, nice and spreadable, perfect on toast and everything else, half the cholesterol of regular butter! (You can also use this mixture, sans the salt, in cooking.)

For a fun activity for the kids, nix the mixer and use a large jar with a lid instead — the only thing you need to do is SHAKE-SHAKE-SHAKE (smaller hands may need help, and a soft surface for the jar to land on in case they drop the jar LOL). Patience is the key if you choose this route — sometimes it takes a while to get those solids and liquid to separate, but their excitement when it happens is priceless!

It’s a nice history lesson too on “butter churning”. Laura Ingalls Wilder’s mom colored their butter using carrots.

More information here

Edited: You could also make cultured butter — a bit more involved but satisfying nonetheless — by following the instructions here, from Jonathan White.