Ketchup gone bad????????

Question

wut would make katchup fizz taste like alcohol or acid and burn ur mouth

Answer 1

It may have fermented in the bottle; the sugars were converted to alcohol and produced CO2. It means two things: the ketchup is contaminated and very old.

THROW IT OUT!

Answer 2

That happened only one time to me. The bottle was in the sun for days, and it did explode sort of....and fizz.  I threw it out so I don't know the safety of it.  

Answer 3

it must be really old, throw it out.

=]