Preparation In a 5- to 6-quart kettle bring split peas and 5 cups water with salt to a boil, and simmer, covered, stirring occasionally, 40 minutes, or until most of water is absorbed. In a large heavy skillet sauté salt pork in 1 tablespoon butter over moderately high heat, stirring occasionally, until golden. Add onion and sautéF, stirring occasionally, until softened. Add carrots, leeks, lettuce, bay leaf, and thyme and sauté, stirring occasionally, 3 minutes. Stir vegetable mixture into split peas with fresh or frozen peas and remaining 2 cups water and cook, covered, over moderate heat, stirring occasionally, 1 hour. Strain soup through a sieve into a large saucepan, pressing hard on solids before discarding them. Add broth, half-and-half, remaining 2 tablespoons butter, sugar, white pepper, and salt to taste and bring soup to a boil over moderately high heat, stirring.
Preparation In a 5- to 6-quart kettle bring split peas and 5 cups water with salt to a boil, and simmer, covered, stirring occasionally, 40 minutes, or until most of water is absorbed. In a large heavy skillet sauté salt pork in 1 tablespoon butter over moderately high heat, stirring occasionally, until golden. Add onion and sautéF, stirring occasionally, until softened. Add carrots, leeks, lettuce, bay leaf, and thyme and sauté, stirring occasionally, 3 minutes. Stir vegetable mixture into split peas with fresh or frozen peas and remaining 2 cups water and cook, covered, over moderate heat, stirring occasionally, 1 hour. Strain soup through a sieve into a large saucepan, pressing hard on solids before discarding them. Add broth, half-and-half, remaining 2 tablespoons butter, sugar, white pepper, and salt to taste and bring soup to a boil over moderately high heat, stirring.