For all your lids on jars/pots/etc that you'll empty straight away and you won't be reusing, there's one simple and easy trick:
Get a sharp knife/object and poke a small hole in the lid
Use a sharp knife/object and poke a small hole in the lid
It's the same effect as with the spoon, you're letting the air pressure equalize, but this could save you a bit of fiddling around.