I have a pile of dried foods, and haven't bought liquifry or used egg yolk since I bred zebra danios in my teens. I (try to) breed a lot of fish, so it's worthwhile for me to have a good stock on hand.
I buy decapsulated brine shrimp online. I also have the fine powder from the bottom of dried krill bags, commercial cricket powder (health food stores), a food sold in the US as golden pearls (very good stuff) and my go to live, freshly hatched brine shrimp. In the marine section of Canadian stores, you can find powdered krill sold to feed corals. If you mix it in a little water and shoot it into the tank with a turkey baster, it is excellent for fry the size of pencils.
Liquifry and especially egg yolks can easily pollute your water.