sugar (uncountable noun) and water (uncountable noun)

[Ju]

Can I have a question as follows?

Sugar (uncountable noun) and water (uncountable noun) is/are what we need to make the sauce.

Behind the above uncountable nouns, should I use is or are?

Thank you.

 

[Chicken Sandwich]

NOT A TEACHER

The subject of your sentence is composed of two nouns connected by "and", so you should use a plural verb. See here for more info.