A double boiler is a two pot cooking device. The bottom pot holds water. The top pot is smaller (usually with a lid) and fits into the bottom pot. When the water in the bottom pot gets hot and boils, it then heats the top pot thereby warming or melting or cooking what is in the top pot. This same device is also known by the french "bain marie".
A double boiler is used for applying gentle heat on the stovetop. If making hollandaise sauce, melting chocolate, etc, gentle heat is needed to prevent burning. Simmering water in the bottom pan gently heats the top pan.
get the first boiler and put it in the toilet then get the second boiler and dip it in poo gravy
A double boiler is used to heat foods which should not get too hot. Chocolate, for example, risks scorching if heated in a pan directly over the flame.
to cook food using steam pressure of course
A double broiler is typically used to melt chocolate or to cook custards or sauces. It can also be used to melt wax for candle making.
A double boiler is usually used to melt choclate. You can make one yourself by using two pots and boiling water.
Gluepot
Finding a quality double boiler has been more difficult in recent years. Double boilers aren't as popular as they used to be. Look for one made by a reputable manufacturer, and one with a thick, well insulated bottom.
Double boiler
A double boiler is used for this. It can also be melted in a regular pan, with water, on a very low heat.
I would recommend using a double boiler. If a double boiler is unavailable, I would heat it on low heat and stir it frequently.
Pasta needs to cook in rapidly boiling water, so a double boiler won't work that well for cooking pasta.
that depends use for what
Boiler
One may decide to purchase a used boiler because of the lower price for a used boiler compared to new boiler, in that case one will have to compromise with the quality of the boiler.
there are two types of boilers water tube and fire tube. fire tube boilers are divided in to two categories vertical and horizontal. this according to the construction of fire tubes. it is said that vertical boilers are inefficient than horizontal boilers. The vertical boiler is small capacity, and horizontal boiler is higher capacity, well, the horizontal boiler have many types according the drums, there are single drums boiler, and double drums boiler, while, the single drums boiler have fire tube boiler and water and fire tube boiler, double drums boiler is usually water tube boiler.
boiler+coal=steam engine