Yep - its one big bag (2lbs) then about another cup - I *think* thats right anyways
Im not sure about different .. maybe the way you mix it together .. With the wilton - I didnt mix the water and meringue .. then add the cream of tarter .. and didnt mix it on slow for the 10 mins - I think all that is a bit diff. I really cant remember, sorry.
It does come out kinda thick, but not as thick as the Wiltons did ... Antonia suggest adding (dont quote me on this!) 1/4c warm water to the whole amt after its done, to get the correct consistincy for piping (?) but I dont do that - I use it as is for my outlines then thin only what I need for flooding ... I would suggest just adding a little water till you get what YOU like!!
And BTW: this makes a large amt. If you dodnt use all of it, you can store any UNcolored icing covered on your counter for weeks and weeks .. you can also freeze it
Thats what I do .. let thaw in fridge, then let come to room temp b4 using ... just whip it again in your mixer 5-10 mins ...