Some vitamin pills can be crushed and swallowed or mixed with food, although they may taste bitter because they are designed to be swallowed whole and not tasted.

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Ketchup ignites the palate as one of the few foods to stimulate all five sensations inside the mouth: salty, sweet, sour, bitter and umami, the latter of which gives body to food and is the savory taste found in cured meat and MSG.

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"It's very bitter, obviously, " she said of the austerity measures that have left some Greeks struggling to pay for food or utilities.

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