Yeast energizer?

[bjzelectric]

Ive heard about yeast energizer before but what is it and how should i use it?
It came with my extract kit. Its 2 tsp. for 1 packet of safale us-05.

 

[Parker36]

Probably just a nutrient pack. I would save it for either a big brew or a liquid yeast, myself (depending on how much you have)