KRUPS - Blade Coffee Grinder (F20342)

I have one of these. [Krups Blade Grinder](https://www.amazon.com/gp/product/B00004SPEU) Actually, 2 of them. A black one for coffee and a red one for spices. It grinds spices to a fine powder pretty much. Probably too small for oat powder or powdered sugar in reasonable quantities, but great for whole spices. I also use it to turn dried chopped onions to onion powder, so I only get the dried chopped onions instead of both. One trick I use if I am making a blend that includes dried herbs (like for a dry rub) is that it does not do the greatest job of powdering dried herbs alone. But, since the vast majority of those blends include salt I generally have rock sea salt or similar on hand. Add a couple rocks of that with the herbs and they help provide the grinding action to powder the dried herbs pretty good.

There’s a $40 or so 4 cup Cuisinart food processor that will do these things. It’s a good start. I managed for decades with it instead of a larger one. if I needed more I just did more batches, like for a double pie crust I would do one crust at a time. But you won’t get tiny spices to grind in it, for that you need a $20 Krups coffee grinder. Which would also do the salt. You can make superfine sugar with either of these things but not really confectioner’s sugar which is cheap anyway, just buy the stuff.

I make do with a Krups coffee grinder, terrible for coffee, only good for 2 Tbsp of spices at a time, wet materials seem perilous. But used ones are $10. If you're serious about this, and want the best grinder $50 can offer, I'd look to the [Premier Spice Grinder KM-521](https://www.premierkitchen.in/shop/premier-spice-coffee-grinder/) from India. 400 ml capacity, $40 MSRP in India, can be had for $60 and sometimes less shipped in the US.