Adapt a 3prong dryer outlet for other use
The best way to do this is with a step-up transformer (like this one) that is rated to handle the amps your coffee pot needs (most convertors will not handle that much amperage so be sure to double-check).

You can't really adapt a dryer plug to Type G because they get to 240v by using two phases (120v x 2 prongs) and Type G uses a single 240v. Also, UK us 50Hz and Ecuador/US is 60Hz.