stuck fermentation on first extract?

[mattybabsy]

started my first extract- nearly 2 days ago and there's still no signs of fermenting

I used this yeast:

http://www.brewuk.co.uk/store/ingredien ... ennes.html

It was the frist time I've used these packs and I'm worried I didn't let it expand too much.

The og was 1.73- it should have been 1.5 something according to the box it came in.

It's been over 40 hours since pitching. Should I give it a stir? how long until I just need to pitch more yeast? and if I need to pitch more, what kind should I use- I made this extract kit

http://www.northernbrewer.com/shop/mill ... rains.html


there's over an inch of stuff stuck on the bottom of the fv and a couple of small white circles on the surface (is that the beginning of fermentation?)

any suggestions would be greatly appreciated

thanks

 

[RobWalker]

Was the wort hot when you pitched? Did the packet swell fully when you used it?

 

[mattybabsy]

rob thanks for the reply

the wort was the correct temp when yeast was pitched- I had cooled it down. The pack probably could have been swollen more- tbh the wort cooled much much quicker than I had thought in the bath and therefore the yeast pack wasnt given as much time as I'd planned. It's started to ferment though, so lucky I guess. Next time I'll let the pack expand more

thanks again