Preheat oven to 350°. Pour boiling water over raisins in a small bowl; let stand 5 minutes. , In a large saucepan, heat milk, cracker crumbs and butter until bubbles form around side of pan; remove from heat. In a large bowl, whisk eggs, molasses, sugar, cinnamon, ginger and salt until blended but not foamy. Slowly stir in hot milk mixture. Drain raisins; stir into bowl., Place six 4-oz. ramekins in a baking pan large enough to hold them without touching. Pour egg mixture into cups. Place pan on oven rack; add very hot water to pan to within 1/2 in. of top of cups. Bake until puffed and just set, 40-45 minutes. Remove cups from water bath immediately to a wire rack; serve warm with ice cream.