grammaticality - Which is grammatically correct: "There is tea and juice" or "There are tea and juice"?

1. The bread and butter was tasty


2. Bread and butter are sold in this shop.

I have been taught when things are considered separately, we should use 'are' but when they are used collectively, we should use 'is'.

But in the following example, which one is correct?

A. There is tea and juice
B. There are tea and juice