It may conveniently be extended to similar mixtures of sulphur and selenium or tellurium, of bismuth and sulphur, of copper and cuprous oxide, and of iron and carbon, in fact to all cases in which substances can be made to mix in varying proportions without very marked indication of chemical action.
The compressors being set to work, the air is caused to issue from the lower end of the pipe and to mix in fine bubbles with the rising column of water, sometimes several hundred feet in height.
Add the curry paste and/or cucumber, mix in well and fry for 3-5 mins.
Using a wooden spoon, slowly mix in the water until the mixture forms a pliable dough.
I mix in about 1 1/2 to 2 cups then knead in the rest on a lightly floured surface.
