A German "I Love You"

Jani says, "Say 'Ich Liebe Dich' and make him Saurbraten with gingersnap gravy. You'll probably be able to find a recipe for Saurbraten in any standard cookbook, but the gingersnap gravy-that may pose a problem. Here's the recipe:
2 cups marinade from Saurbraten
1/2 cup cold water
2 tablespoons flour
2 teaspoons sugar
10 gingersnaps
Remove meat and vegetables from pot to platter and keep warm. Pour off the marinade until you've got two cups. Add 10 crumbled gingersnaps to marinade. Mix and shake flour and water and sugar together in a gravy shaker. Make sure you have a smooth mixture. Stir slowly into the hot broth. Bring to a boil. Boil one minute. Season to taste and serve. Potato pancakes would be fun with this dish."