variable products & text box input

I am building a new shopping cart for http://www.stingnlinger.com . The old one was built in SohoLaunch about 10 years ago. SohoLaunch had an option to add text boxes to a product allowing for the user to input a quantity.

For example, see https://www.stingnlinger.com/shopping/pgm-more_information.php?id=41#MOREINFO

There the user could put “1” next to mild, 3 next to “Flame Roasted” etc…

I need this same ability in Woocommerce.

I have found a lot of posts/support comments regarding creating “variations” and how to do that.

I have 2 problems…

(1) when I am in my WP admin I do not have the option to create a “variable” product – which seems to be required for allowing the variations. How do I enable creating a variable product? I don’t even have that switch or choice when I create a new product.

(2) what is my BEST tool for doing this kind of choice? on that site we have a lot of “choose your flavor” special packages. And it is best handled by letting them put the text quantity in. (On some packages I could make a dropdown or radio button work better, but on a number of products we need to let them type in the quanitity.)

I am not against a plugin to help but I also don’t want to buy one that I don’t have to have if I can avoid it.

Thanks in advance for any help you can provide!

The page I need help with: [log in to see the link]