Extended mash period

[jrugman]

Thinking about doing my first AG soon and have a simple question about mashing time. I read somewhere that it's OK to mash during an evening (say) and leave the mash overnight for a prompt start the next day. Apparently it isn't necessary to hold the required temperature after the initial period. The beer is said to be all the better for this extended mash.

Any advice about this?

John