Never used it, what's the instructions on the packet for mixing it? I guess you add water and stir.
Presumably multiply the amount of water needed for one packet by the number you are using and keep stirring with a big spoon or whatever while you mix it, until it's a nice consistency for messing up
That'll ensure you get a fabulous consistency, without wasting any of your precious packets. Treat it as an investment in WAM equipment: you'll be able to use it again and again to create some epic goo for pouring, filling, dunking - whatever your preference.
And yes - it's perfect too for making up a flour/water mix that WON'T ruin your hair (ask me for the recipe )
I've used a tool that is used to mix floor cement. The tool is placed and tightened in a hand drill (cordless or otherwise). The other end has spiral wings that drops into whatever is being mixed ( in your case gloppy brownie batter, sounds awesome). It will mix it up quickly. I've also used milk instead of water oh and don't forget the eggs!
I have a mixer. Will have a go later. Might add a little oil too
Rachel x
Just follow the ratios if there are any. Usually boxes of batter include the amount of water and vegetable oil per batch, then you can make it thicker/thinner depending on your preferences... Enjoy!