ok i think i just found the tastiest way to use old stems.
Its called Hot T H Chocolate

Ok first get some kick ass hot chocolate, not that pre made powered cocoa shit.
USE MILK!!!!!!!!!!!!! set to simmer or heat up or what have you. follow the directions to make the hot chocolate as per the instructions.
BUT!! as you are adding the chocolate, add a LOT of stems but not any thing small enough to swallow (little peices of bud) that shit gets nasty---- let simmer and mix it up!
Mix it up good and strain it into a mug or cup with out the stems, now enjoy a nice chocolately thc concoction.
If you did it right you can actually see the thc crystals on the top of the drink, you dont get "HIGH" but it is deffienetlily a relaxed feeling, in fact i am having some now and i feel great

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Nothing i say is true, i do not use, grow, or condone the use of marijuana, every thing i say is a fabrication.