but getting all of the liquid out of the can is damn near impossible.
Never had a problem with this at all. If it comes in a plastic jug I simply fill it a third of the way with hot water from the faucet, mine gets quite hot. I then cap it and shake it aggressively then pour it into my kettle. Has always gotten every last bit out. For a can I fill about halfway with hot water and stir, also has worked perfectly each time.
With DME I could never understand the clumping complaints. For one, don't pour straight from the bag. I pour into a large bowl the slowly pour from the bowl into the kettle as I stir it in with a whisk. No clumping problems. When doing the last bowls worth of DME I then scrape the bowl floor and along the edge where a little has clumped from the steam and stir it into the pot. I wouldn't dip a measuring cup in, the sudden temp change could break it.
Rev.