The present invention is a dimensionally stable solid detergent composition which can be used as a soaking composition. The composition includes a bio-based content of 58% or greater and includes an alkalinity source, a metal protector, a surfactant system, water, a threshold agent, and a polysaccharide hybrid polymer composition. The polymer the polysaccharide hybrid polymer composition includes a polysaccharide residue present in an amount from approximately 5% to 90% by weight of the polysaccharide hybrid polymer composition and a residue of at least one ethylenically unsaturated monomer or salts thereof present in an amount from approximately 10% to 75% by weight of the polysaccharide hybrid polymer composition.