Papaya meat tenderising guide

Papain breaks down proteins, which is why papaya has a long history in meat tenderising. The difficulty is control. Concentration, cut thickness, temperature and contact vary too much for one universal minute count. This guide therefore gives conservative preparation advice and separates fresh green papaya from measured commercial papain products.

Fresh papaya and commercial papain are not equivalent

Commercial tenderisers contain measured ingredients and should be used according to their label directions. Fresh green papaya puree has variable enzyme activity. Converting one directly into the other would create a false sense of precision.

The surface can soften before the centre

Papain acts where it contacts the meat. Thick cuts can therefore develop an overly soft exterior while the centre changes less. Thin pieces expose more surface area and can over-tenderise quickly. Start with a modest test batch rather than an expensive large cut.

Cooking does not undo over-tenderising

Heat eventually stops enzyme activity, but it cannot rebuild protein structure that has already been broken down too far. Remove the papaya preparation before cooking and avoid leaving active enzyme on meat indefinitely.

Continue from here

Read what papain does and browse papaya recipes for other culinary uses.