Testing instant yeast
I just recieved my package of SAF instant yeast that I recently ordered and started to use it right away. one of the recipes I am making is baguettes from ABAA and as part of the recipe it says to dissolve 1/4 tsp of instant yeast in water and let it sit for 5-10 mins. So I proceded to do this and while expectin a "head" to form on the water I just got a little foam. I am a little concerned by this becase I wonder about the power of the yeast. I guess I have 2 questions I am asuming that since I was oly using 1/4 tsp in alot of water and no sugar I should not expect the nomal foam and if I am wrong on this can anyone suggest a way to test this yeast? is it dissolve like a packets worth in water and sugar or is there some other way. I am really concerned about this as #1 of course I do not want my bread to fail and #2 I spent alot of money to order this yeast.