A pinch of sodium bicarbonate changes the surface chemistry of meat before it ever hits the pan. Here's the reaction behind the technique - and exactly how much to use.
Raw meat sits slightly acidic. Baking soda is alkaline. Brush it onto the surface and the pH climbs - which stops muscle proteins from bonding tightly when heat hits them, so they trap moisture instead of squeezing it out.
Muscle tissue is mostly water held inside a scaffold of proteins - chiefly myosin and actin. Cook meat at its natural pH (roughly 5.5–6.5) and heat makes those proteins coil tight and cross-link with one another, wringing water out of the structure like a squeezed sponge. That's what makes an overcooked cut dry and stringy even before it's overcooked.
Sodium bicarbonate (baking soda) is a mild base, roughly pH 8–9 in solution. Applied to the meat's surface, it pushes the local pH up and away from the proteins' isoelectric point - the pH at which they carry no net charge and clump together most readily. Away from that point, the protein strands carry a slight negative charge and repel each other rather than bonding tightly. The result: a looser protein matrix that holds onto more water and stays tender under heat.
Baking soda moves the meat's surface pH away from the isoelectric zone of myosin and actin - the range where these proteins carry no net charge and bond together most readily. Farther from that zone, the proteins repel each other and hold water instead of expelling it.
Proteins coil tight and bond to each other under heat. Water is forced out of the structure - the fibers squeeze like a wrung sponge, so the meat turns dry and firm.
The alkaline surface keeps strands charged and spaced apart. They resist bonding, so water stays trapped between them - the fibers stay loose and the meat stays juicy and tender.
The right method - and dose - depends on the cut. Too much, or too long a soak, pushes past "tender" into "mushy" and can leave a faint soapy aftertaste, since bicarbonate itself has a bitter, alkaline flavor.
Toss meat with baking soda by hand so it coats evenly. Always rinse before cooking - this is the step that removes the aftertaste risk.
Mixed straight into ground meat, the same pH shift also speeds up the Maillard reaction - the browning reaction between amino acids and sugars - so patties can brown faster and darker.
Where this technique earns its keep: tougher, leaner cuts and thin-sliced stir-fry meat - the ones that go rubbery fast under high heat. It's overkill on already-tender cuts like filet, and it won't fix collagen-heavy cuts that need long, slow cooking instead of a quick pH shift.
Sources: Arm & Hammer culinary science notes; general food-chemistry literature on myofibrillar protein pH and water-holding capacity. July 2026