| 21. | "What a pickle, " he said, his lips pursed with sourness.
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| 22. | In short, more sourness ahead.
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| 23. | Two good starts this weeks could do much to alleviate the sourness from earlier this season.
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| 24. | Our ability to detect sourness in foods is highly refined, as well as slightly mysterious.
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| 25. | MINUSES : Below the bracingly nasty humor, the movie has a deeper sourness of tone.
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| 26. | Wine or vinegar is also a prominent ingredient, to lend a sourness to the recipe.
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| 27. | Sourness was created in the Labour movement by suggestions of'Reds under the bed '.
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| 28. | Vinegar is added for its sourness, and diners may specify how much vinegar is used.
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| 29. | Fruit are about the size of grapes and taste like cucumbers with a tinge of sourness.
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| 30. | Saltiness and sourness are perceived when alkali metal or hydrogen ions enter taste buds, respectively.
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