But I usually use one bulb as one shallot. Anyone know?

because I find the flavor too subtle to justify the cost. Because the flavor is so subtle, I would use both.

I'm convinced shallots were discovered by a housewife who couldn't get anyone in the family to eat onions and who was sick of food that tasted like cardboard.

I'll bet you're right.

One shallot equals one bulb. If there are two that are attached use one.

chop them all up, and freeze 1/4 cup amounts in snack size baggies. Then I use one baggie in a recipe calling for a shallot. Don't know if that's right, but it works for me.

They have a less strong flavor than onion or garlic; so if I'm substituting for one or the other, I use more shallots.

I never see shallots at the grocery store the size of the ones Blue Apron sends. So with store-bought shallots I would use the whole thing and maybe two whole ones because they are so small. With Blue Apron, I feel there is too much shallot for the recipe occasionally so I save some and use it later.

Its funny, I think shallots have a stronger taste (and smell) than onions. I love the taste (and smell)!

Lately, I like to use shallots because I am making smaller portions and don't need a whole onion and end up throwing the old unused onion out.