@karitylil while we had juicers in previous versions of the game before, and a food processor in The Sims 1, I guess the developers hadn't felt that there was a need for a blender or similar appliance in TS4 yet.
There was some talk years ago with the survey that led to the Nifty Knitting SP (I think it was that one, but if not, it was the Laundry Day SP -- it was one of the stuff packs that we voted on) were one of the choices early on was to have a health/fitness SP that would have things like diets and smoothies, if I remember correctly. But this wasn't the idea that won the poll, so we didn't end up with that pack. However, that doesn't mean that we will never get a pack or at least some items like that since we ended up also getting the Paranormal SP even though that didn't win the poll either (though that came in second!). I do not work for EA, so I know nothing, but it wouldn't surprise me if at some point we get the ability to make smoothies with some sort of blender or juicer type appliance!
And I love herbs and spices in real life, so I am always up for more seasonings in the game! 🥳