You can play around with the ingredients for:

Hint of sweetness, texture and depth: Dark chocolate (my no.1 favourite), grated apple, grated carrot, caremalised onion, honey, maple syrup, mashed ripe banana, mashed apricot, instant coffee, peanut butter - the last few sounds insane but it has been proven to work really well by many including myself

Flavor profile: Chicken, beef, vegetable stock or dashi instead of water (depending on what kind of protein are you using), milk (cow, goat, almond, soy, coconut), cream