Is there anything like a wide mouth flask on the market that will keep food warm?

Not talking about soup, an ordinary flask will do that job.

Talking about a really good product that will keep a meal nice and warm/hot, like a stew or a curry.

ive got an old food flask, as you say for stews etc. good for about 6hrs.

mines made by alladin and is foam&glass unsulated. about half a pint in size.  i dont use it often.

I've got a Stanley stainless steel wide neck flask.  I usually put chilli and rice in mine, certainly good for about 6hrs.

http://www.lakeland.co.uk/product.aspx/!11202_11203

I use one of the stanley ones and have no problems. (TK Maxx 9.99)

Seen this though and thinking of getting one:

http://www.lakeland.co.uk/product.aspx/!11614

and asda are selling thermos wide mouth ones for a tenner.

 http://www.lakeland.co.uk/product.aspx/!5723

and you can get these from lakeland and blacks and can be frozen or heated - they are like sheets of plastic. i havent used them hot but they are pretty good for keeping foor cold.