(1) For a sweeter zwieback , we melted 4 tablespoons of butter with 1/4 cup sugar and 1/4 teaspoon cinnamon and brushed the mixture onto one side of the cut slices before baking them, which took 10 to 15 minutes longer because of the extra moisture.(2) I don't think anything can precisely substitute for zwieback , which is a lightly sweetened yeast rusk.(3) Usually by eight to ten months, a healthy infant can have finely chopped foods or zwiebacks with minimal likelihood for choking.(4) Grind the zwiebacks in the food processor and measure 1 cup of the crumbs.(5) To make zwiebacks , pinch off two small buns of dough and place one smaller one on top of the larger, bottom one.
