Liz -

Dishwasher soap - for the automatic dishwasher - is formulated to minimize foaming. Pre-rinsing dishes with ordinary "dishwashing" soap before putting them in the automatic washer can, in fact, prevent proper cleaning since even tiny amounts of residual "ordinary soap" makes enough bubbles to kill the efficiency of the water impact that's supposed to knock the crap off the dishes. (Even tiny bubbles make excellent shock absorbers.)

A very small amount of "automatic dishwasher soap" would be sufficient, and shouldn't make more than minimal suds even in a food processor.

And for getting the last of the suds rinsed down the drain after hand-washing things, cold water is much quicker than warm, since it reduces the "sudsing" action.

For killing really persistent suds, a sprinkle of "Epson Salts" (usually sodium sulphate) is very effective, and is kept on hand by many laundromat operators for clearing machines that people have overloaded with suds. Getting rid of the suds actually has little effect on the "cleaning power" of a detergent. The "bubbles" are added only because people expect to see them - and are really there only for marketing purposes.

John