- 2 garlic cloves
- 1 teaspoon Dijon mustard
- 1 tablespoon red-wine vinegar
- 3 tablespoons extra-virgin olive oil
- 1/2 pound dried small white beans such as navy or pea
- 1 fresh thyme sprig
- 2 slices firm white sandwich bread, crusts removed
- 1/3 cup heavy cream
- 2 tablespoons extra-virgin olive oil
- Accompaniment: toasted baguette slices (croûtes)
- Special equipment: a food mill fitted with large-holed disk
- Blanch garlic in a small saucepan of boiling water 3 minutes, then drain and finely chop. Transfer garlic to a bowl and whisk in mustard and vinegar. Add 3 tablespoons oil in a stream, whisking until emulsified. Season with salt and pepper.
- Soak beans in water to cover by 2 inches in a large bowl at least 8 hours, then drain. Simmer beans with thyme in fresh water to cover by 2 inches in a 3- to 4-quart saucepan, partially covered, until very tender, about 1 1/4 hours (some beans will fall apart). Reserve 1 cup cooking liquid and drain beans, discarding thyme.
- Crumble bread into a large bowl and stir in cream. Force beans through food mill into moistened bread, then stir in oil. Add reserved cooking liquid 1 tablespoon at a time for a spreadable consistency. Season generously with salt and pepper.
- Serve warm with vinaigrette spooned over purée.