[Can't believe it. mally wrote the above while I was writing the below
Joco, edit your post with a tick after reading the below for two reasons...
1. I am going to answer your question in one post
2. Pretty soon, admin here are going o be cracking down on the instructions given in this thread
. (Good thinking really there about ticking a question once it is answered - and, time-saving!!!)
Okay Joco, your wort will be fine to use in a starter if it smells and tastes okay. That is the answer.
I pitched yeast onto a brew a few days ago that I boiled up around 18 months ago and had no-chilled. I smelled and tasted before I pitched and all was good.
This is the same as what you want to do Joco. Smelling and tasting answers other questions as well such as, "Is my slurried or washed yeast still okay?" or, "Is my beer okay/"