First--thanks to "oldlady" for calling and giving me a recipe. I appreciate the info. And I'm checking out the other recipes. I do have a BIG closet full of chemicals, so I've got lots of options.
I did want to clarify one misunderstanding--When I said I was responsible for making 150 bowls for our souper bowl fundraiser, I didn't mean to convey that I was the only one contributing. The Blue Ridge Potters Guild provides 500 bowls for our event, then another 200 for an empty bowls fundraiser in Floyd County, VA. I myself made 56 bowls last year for the rescue mission and 25 for Floyd County. Our 150 commitment this year is because of my new job at the Roanoke Rescue Mission--instead of my making 50+, me and my students are going to make 150. And then the other local potters are committed to providing all the rest--what a great group!!!
thanks again for all your help.