I have a pint of fruit juice, and some Gelatin. I want to make a fruit jelly for after dinner, which will be in 8 hours.
Living in the city with a vegetable shop around the corner, I do not have a refrigerator. It is however cold and rainy, and from experience, 6-7 hours on the windowsill will cause it to gel almost perfectly.
Are there any additional, simple tricks I can use to lower the temperature in the bowl by a few degrees more? I will be using a relatively flat bowl.