Ive been trying to get my pitch rates a bit better and when Brewfather software tells me to use 1.5 packets of yeast I store the remaining half pkt of yeast in foil, wrapped in plastic wrap in the fridge. Is this what others do? Here in NZ the cost of say US-05 is around $8 and even higher at some shops so 2 packets adds significantly to the over all cost and I am a cheap charlie. Any other ways or am I good to go?