After that, you may just want to curl into a little ball, cry a little, drink a bitter European coffee, and then delete your Facebook account.

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It's a bitter scenario for competitor Caribou Coffee (nasdaq: CBOU - news - people ), which last month served up a hot public offering of their caffeinated services.

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And even then, genuine liking of bitter foods and drinks like kale, spinach, coffee and beer is gradually acquired through perseverance.

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It smells like cocoa powder, and bitter chocolate, and tastes of rich roasted malt, chocolate and coffee, with a hint of dark cherries.

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