I think tigers are a great examples mate. A little sugar transforms them.
Agree on the salt (particularly rock salt), garlic and chilli too. Fantastic additives.
I'd also mention fenugreek, yeast extract (marmite), condensed milk, fish sauce, fizzy drinks (coke/red bull) etc..... there's loads of them (most of which are heavy on either salt or sugar) that can really put a twist on your particles. Do they work?.... who knows. They defo don't do any harm as I've caught plenty of carp on all of them.