I am making the coffee cup jacket thingie (can’t remember what it’s called…it’s from www.magknits.com ) and it asks for a double increase. I don’t think I’ve done one of these before. I found a definition of it – making 3 stitches where there was only 1 – but no description of HOW to do it. Do I just knit into the same stitch 3 times and slip them all off the left needle at once?
First knit into the front of the stitch, don’t slide off, then k into the back of the same st, don’t slide off, then k into the front again and then slide off. Ta-daa! Three where there once was one. 
Just to be clear, which is the front and which is the back??? To me, the front is where you normally do a knit stitch from.
Yes, you’re right. K as normal for the first, k from r to l into the back loop, then k as normal again. 
