Seriously, why is it necessary to throw out homemade mayonnaise after
three or four days. I usually make my own. In the summer I add
basil, tarragon or whatever herbs I grow. I do use an egg, but keep
my eggs in the fridge for up to a month and I haven't ever got sick
from them.. I guess Hellmans/Miracle Whip has additives that keep
theirs safe forever. Always feel kind of tentative though when I take
my mayo out on the fifth or so day. e.