Barry isn't stupid. He knows that things that aren't clear shouldn't just be eaten, otherwise, who knows what the consequences might be. So, he's only looking for one type of potion, the "Nutrient Liquid" Richard gave him to drink before.
He remembers it very clearly, it was a light blue, slightly viscous liquid.
"This is not it, this is not it, this isn't it either..." Barry muttered to himself as he quickly passed by cabinet after cabinet, finally stopping in front of the fourth cabinet, seeing the liquid that was identical to what he remembered.
"Blue, slightly viscous, exactly the same as what I drank before. The only difference is... these symbols..." Barry took the chosen potion from the cabinet and compared it with the empty potion tube from before, discovering that the square symbols on the label of the Glass Tube's surface were not identical.
