Invert sugar?

[DerikC]

So, my next batch is going to be a gruit ale. The recipe I'm basing it off of called for "0.5 lb. Homemade invert candy sugar (medium color)". Now, the problem is I don't know how to make it. The google results confuse me and I was wondering if you folks had a simpler explanation, or even a substitution.

-Derik

[RedBeard]

There's a thread somewhere on here where it's explained with pictures.

[gplutt]

http://www.homebrewchatter.com/board/showthread.php?t=53&highlight=invert+sugar

Here's Flans thread.