1/2 apple (something sour, like Granny Smith)
1/2 small head cabbage
1 tablespoon fresh lemon juice
1/4 cup pecans
1 tablespoon unsalted butter
2 teaspoons sugar
1 tablespoon chopped fresh chives

Cut apple into 1/2-inch cubes and very thinly slice enough cabbage to measure 3 cups. In a bowl toss together apple, cabbage, lemon juice, and salt to taste.

Let sit for at least 30 minutes to let the lemon juice work its magic.
Chop pecans. In a small skillet toast pecans in butter over moderate heat, stirring occasionally, until fragrant. Sprinkle sugar and salt to taste over pecans and cook, stirring frequently, until pecans are coated, about 1 minute. Remove skillet from heat and cool pecans slightly. Add pecans with butter in skillet and chives to cabbage mixture and toss to combine well. Season slaw with salt.