My yeast doesn't bubble but kinda works?

I only have regular access to 2 yeast products here - active dry yeast from company #1 and active dry yeast from company #2.
I'm proofing them by mixing 6g of yeast + 1tsp of sugar + 325ml of room temperature water but unlike I've seen in youtube videos, neither of them makes any bubbles after 10 mins of waiting.. the surface of the liquid is completely still.
They still seem to rise the dough though, my pizza dough balls grow around 4x their size after a few hours at room temperature or a day in the fridge.
So is my yeast dead or alive? Maybe its just shy?
Best Answer
I whisk together active dry yeast with water at 105 to 115 degrees F (40.5 to 45 degrees C), not room temperature water
If the kneaded dough rises properly (as expected) I believe nothing is wrong and no action is required Your yeast is alive and fine!
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What to do if yeast is not bubbling?
If your recipe doesn't call for sugar, add a small amount (1/8 teaspoon will do it) to the proofing mixture to give the yeast something to feed on. If the mixture isn't bubbly, the yeast is no longer good. Dump out your mix, and start with fresh yeast. Unfortunately, there's no way to revive old yeast.Why did my yeast not froth?
There are only two answers to the question why is the yeast not foaming: it's past its expiry date or it hasn't been stored properly. It means that it's no longer active and the dough won't rise if you use it.Why is my instant yeast not activating?
The water needs to be between 100 and 110 degrees Fahrenheit (37 to 43 degrees Celsius). If the water is too cold, the yeast will not "wake up." If the water is too hot, you run the risk of killing the yeast. Make sure the amount of water you use is not greater than the amount called for in your recipe.How to Fix Dough That Won't Rise
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