Roquefort Terrine

Name: Roquefort Terrine
Ingredients: 2 Ounces walnut halves; 3/4 Cups milk; 1/4 Cup heavy cream; 12 Ounces egg yolk; 2 Ounces sugar; 1/4 Cup Guinness; 1/4 Cup molasses; 1 Teaspoon baking soda; 1 Egg; 2 Tablespoons sugar; 2 Tablespoons dark brown sugar; 3 Tablespoons grape seed oil; 1 1/2 Teaspoon ground ginger; 1/2 Teaspoon baking powder; 1/4 Teaspoon cinnamon; 1/4 Teaspoon ground cloves; 1/4 Teaspoon nutmeg; 3 Bartlett pears; 4 Ounces sugar; 3/4 Cups water; 1 Vanilla bean; 1 Star anise; 1/2 Cinnamon stick; 8 Ounces Roquefort; 3.5 Ounces mascarpone; 3 Sheets of gelatin; 2 Halved, poached pears (see above); Pinch of agar-agar