The best replacement for double boiler is crock pot.

The best alternatives to double boiler are rated as following:
★★★★★  crock pot
★★★★  hx
★★★★  bain marie
★★★  heat exchange
★★  heat exchanger

Your alternative for double boiler is not listed? Suggest!
Speaking about double boiler, one probably shouldn't forget about chocolate.

Other search terms related to double boiler and their ratings are:
★★★★★ chocolate
★★★★ double boiler
You have in mind a companion for double boiler and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of double boiler in all years. Click on graph for more.
double boiler
crock pot
hx