If you'd like a salt rim: Pour coarse salt onto a dish that is larger than your glass's rim. Use spent lime wedges to moisten the rim of your glass and press it into the salt. Set aside.
Mix the hot sauce, pickle brine, lime juice, and vinegary pepper sauce at the bottom of your glass. Fill the glass with ice, and then pour in the lager. Mix thoroughly and garnish with cornichons and pickled pearl onions if you'd like. Drink immediately!