Preparation Blanch mustard greens in a 4-quart heavy pot of boiling salted water 1 minute. Drain greens in a colander and wipe pot dry. Cook garlic in oil in pot over moderate heat, stirring, until pale golden, about 30 seconds. Add greens and water and simmer, partially covered, stirring occasionally, until tender, 5 to 6 minutes. Season with salt and pepper.
Preparation Blanch mustard greens in a 4-quart heavy pot of boiling salted water 1 minute. Drain greens in a colander and wipe pot dry. Cook garlic in oil in pot over moderate heat, stirring, until pale golden, about 30 seconds. Add greens and water and simmer, partially covered, stirring occasionally, until tender, 5 to 6 minutes. Season with salt and pepper.