Soap naturally dissolves fats and oils, allowing grease and food residues to rinse away easily from dishes, cookware and kitchen surfaces. Before modern washing-up liquids became common, solid soap was widely used for cleaning dishes, cookware and kitchen utensils. These dishwashing bars are based on traditional Savon de Marseille made from vegetable oils and slowly cooked in cauldrons. The soap is enriched with bicarbonate of soda, which helps loosen grease and neutralise odours while supporting the cleaning action of the soap. Used with a sponge or washing-up brush, the bar produces a rich, effective lather that cuts through everyday kitchen grease while rinsing cleanly from plates, pans and glassware. Because the soap is solid, it lasts significantly longer than liquid detergents and avoids the need for plastic bottles. Made in Marseille by La Corvette, this solid dishwashing soap is produced from vegetable oils and enriched with bicarbonate of soda to support grease removal. The simple formulation creates an effective soap solution when used with warm water, allowing grease and food residues to be rinsed away cleanly from everyday kitchen items.