Braised greens: garlic early, acid last
Heat and salt pull water out of leaf cells, and heat softens the pectin holding the cell walls together. A big pile collapses into a small, tender mound. Spinach wilts in a minute or two. Collards need much longer.
Cook garlic briefly, add acid at the end
Sizzle sliced garlic in oil for under a minute, until fragrant, because browned garlic turns bitter. Hold the lemon juice or vinegar until the greens are done. Early acid turns green chlorophyll into pheophytin, a dull olive-brown.
Test yourself
Questions from the interactive lesson, with the answer and the why.
Why does a big pile of raw greens shrink so much in a hot pan?
Water leaves the cells and the cell walls soften. Heat and salt release water and soften the walls, so the leaves collapse.
True or false: Spinach wilts in a couple of minutes, but collards take much longer to turn tender.
True. Tender greens like spinach wilt fast, while tough ones like collards need much longer.
What went wrong? You pour vinegar over kale at the start of a 30-minute braise. The finished greens are a dull olive color.
Acid added early turned the chlorophyll dull. Add vinegar or lemon at the end to keep the green brighter.
Fill the blank: Acid added early turns bright green chlorophyll a dull ___.
Acid added early turns bright green chlorophyll a dull olive. Acid converts chlorophyll to pheophytin, an olive-brown pigment.
How do you get garlic flavor in the greens without bitterness?
Sizzle slices in warm oil for under a minute. A brief cook mellows the flavor before bitter browning sets in.
A mixed pot has collards and spinach. When do you add each green?
Collards first, spinach in the last minute or two. Collards need long cooking, while spinach would turn limp and overcooked.