Which of the following oil is used in salad?
a. canola oil
b. olive oil
c. walnut oil
d. all of the above

28. Mustard and ketchup are considered as?

a. egg yolk
b. oil
c. seasoning
d. vinegar

29. the ratio of oil to vinegar is:

a. 3 parts of oil to 1 part vinegar
b. 3 parts of oil to 3 part vinegar
c. 3 parts of oil to 2 part vinegar
d. 3 parts of oil to 4 part vinegar

30. Which of the following is NOT emulsifier dressing?

A. mayonnaise
b. ketchup
c. mustard
d. vinegar​