A plant or its edible root that has a buttery texture or flavor; possibly a regional name for springbeauty or other tubers.
From butter + root, describing the plant's smooth, creamy texture or flavor. Regional plant names vary significantly and reflect local culinary traditions.
Many edible roots share similar textures and were called 'butter-' something in different regions—this shows how regional plant knowledge gets encoded in poetic names that capture the eating experience.
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