When was the forst vegatable indicator made in? When was the forst vegatable indicator made in?
bellpepper
The universal Indicator was invented in 1923 by Yamada
To pickle a vegetable it is usaually preserved in vinegar. Vinegar is acidic so would naturally affect the colour of the indicator.
Gay-Lussac
in 1957
Alexander Ogilvie from England
cienna bellos dad
beetroot juice and chinease rose leaves can be used for indicators.
Red Cabbage and Beetroot can be used but what else?
The first commercially available frozen vegetable was spinach or peas.
Potato
The 1st down marker indicator was started by John Madden in the Madden football game series, long ago. He did this to tell people where they had to get to in the game, and the NFL used this idea to have what we use now.