Place bowl over simmering water and whisk until nicely thickened (about 10 minutes). (freecoconutrecipes.com)
Place the mixing bowl over the simmering water (the bottom of the bowl should not sit in the water). (theredheadbaker.com)
Melt the chocolate gently in a metal or glass bowl over simmering water, making sure the bottom of the bowl doesn't touch the water. (seasonsandsuppers.ca)