An oil emulsion is a mixture of oil and water that are combined in such a way that tiny droplets of oil are dispersed throughout the water. Full definition
Alexandrovich I, Rakovitskaya O, Kolmo E, Sidorova T, Shushunov S. «The effect of fennel (Foeniculum Vulgare) seed oil emulsion in infantile colic: a randomized, placebo - controlled study.» (easybabylife.com)
Drizzle some garlic, parsley, and olive oil emulsion on top and finish with shaved Parmesan. (petergreenberg.com)
A study (referenced below) showed a 45 % reduction in infant colic symptoms and a 65 % reduction of colic (as defined) in children receiving 5 to 20 ml of a 0.1 % fennel seed oil emulsion up to four times per day for one week. (easybabylife.com)