Most pre made commercial rubs contain MSG. It’s hard to find any without this monosodium glutamate. It tastes really good, and it tenderises protein to leave it moist and tasty, and I’m pretty sure it’s a preservative…….. but, it gives some people hangover migraines, others a tic, and others it unsettles their sleep. I’m not a fan of MSG. I know the carcinogenic accusations are unproven. WHEN I get my bbq’s back, I make my own rubs to avoid MSG, and, given most commercial rubs are also pre salted, I like adding different salts for their various flavours and strengths. I also love experimenting with different herbs, spices and flavours. Dry fried cumin is a favourite. Sent from my iPhone using Tapatalk