"Brian Mailman" > wrote in message
...
> Vox Humana wrote:
>
> > The easy way to make Dulce De Leche is to put an unopened can of
sweetened
> > condensed milk into a small pan. Add water to bring it to about 3/4 the
way
> > up the can.
>
> That's an easy way to make an explosion.
>
> Add water to completely cover the can AT ALL TIMES by at least 2". Do
> not answer the phone while this is going on. Do not answer the door.
> Do not pass go, do not collect $200.
>
> Making this is safe, but it does need to be watched, do not allow the
> can to 'surface' in the water at any time.
>
> B/

Why does covering the can make it safer?