yes, pudding shouldn't hurt your drain at all.
You can put it down the drain, nothing is really stopping you from doing so but you shouldn't put it down the drain. Liquid nitrogen is extremely cold and can have explosive consequences once it sublimates into a gas and could potentially burst your pipes.
Yes. Otherwise the pudding will be watery.
You can put a liquid pipe snake down your drain or put a hose down there
What I usually do, is I put my pudding in a container that comes with a cover. You could use a small Tupperware container. If you use plastic wrap, push the wrap down onto the surface of the pudding and let the edges lap over the sides of the bowl. This will keep air off the surface of the pudding, prevent sweating, and also prevent a skin forming on the pudding as it cools.
By plumbing codes, no.
the sewer is where things that you flush or put down the drain go, a drain is the opening is a sink or shower that sends things to the sewer
Don't see why not. Just make sure you didn't put any other solvents down there first and don't put anything down there with it.
It depends on where you put it, and how much pudding we're talking about.
no
Just take off your mouth piece and neck then put the tilt the sax upside down then let drain.
You put a drain auger down the pipe from the nearest cleanout. You will feel the blockage when you get to it, - then break it through and clear it with the auger.
Sprinkles yes I think Glitter I have been told no