Yeast Not Foaming

[shivvy]

I am following a recipe for a pizza base.
It says to sprinkle the dry yeast over luke warm water and leave for 3-5 mins until it is dissolved and foamy.
It is not going foamy.
I have tried it a few times, with the water a bit hotter, a bit colder, I have added a bit of sugar, I have stirred it, not stirred it, but still no foaming.
I only bought the yeast today and the packet is sealed and still in date.
Suggestions please!

[TheWinner]

I think the clue to all this, is in the recipe. It tell you to use ACTIVE dried yeast, and you have probably used INSTANT FAST ACTION dried yeast. Here is a link to explain the difference.
https://www.seriouseats.com/2018/03/all-about-dry-yeast-instant-active-dry-fast-acting-and-more.html

[shivvy]

Ah TheWinner, I think you have sussed it out, and that link was really useful - thanks.
The yeast I have is called Fast Action Dried Yeast. So, just to be clear, I will add it directly to the dry ingredients, skipping out the foaming part of the process?
And is it necessary for me to leave it to rise before using it?

[TheWinner]

I usually prove mine in a warm bowl until it doubles in size, then when I am ready to make the pizzas, I roll them out and put each one in a (slightly) oiled tin, spread on the pizza sauce and add the toppings and cover again with cling film and leave for about another 20 to 30 mins before baking off, so they rise slightly before they go into the hot oven to cook.

[shivvy]

Have just had a successful pizza for lunch TheWinner!!
Thanks for all your great advice.
And thanks to everyone else who helped.