So, here I am again and it's late, oops, I got these cupcakes wanting to be frosted, the recipe I'm going to use makes 5lbs, I'm thinking should I go for it and hope for the best, or run out to get more ingredients... what's your take on it?

Oh, and there are 5 dozen cupcakes I should mention.

I just had to convert it to kilos and grams.

I have used less that 2.6 kilo to pipe a swirl onto 60 cupcakes.
But then it wasn't a huge tall swirl.... is that what your thinking?

Bluehue

I was thinking something a little taller with a nice gem on the top, but, I went ahead and gave it a go, made the buttercream, piped once around with a large star tip, and the recipe iced 4 dozen with about a tablespoon to spare. Funny, when I was weighing the ingredients and preparing everything, I said to myself "Hmm, maybe I ought to make this a 1 1/2 batch, ...nah" I went with it, made it how it was, but ended up running to the local mini mart to get more eggs. This time around I made a 1/2 batch. Nice to know for the future that I can use that recipe for 4 dozen cupcakes (: Thanks for answering my question though