Superlative form of cressy; most resembling or having the qualities of cress, especially its peppery taste.
From cressy plus the superlative suffix -est, creating the highest degree of comparison for the adjective form.
The 'cressiest' salad would have the most peppery bite—and interestingly, young cress leaves are much less 'cressy' than mature ones because the peppery compound develops as the plant ages.
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