Hot water does not cut through grease the same way soap does. You can test this yourself. Go coat your hands with Crisco or lard. Now wash your hands with hot water until all the grease is gone.
We’ll wait.
I’ll go make myself a sandwich.
Maybe give myself a pedicure.
OK, now that you’re finished – oh, still not finished? OK, I have a book to read.
Yeah, OK. Now do the same thing and wash your hands with hot water and just a drop or two of dishwashing soap. See the difference?
That being said I’ll agree that you really don’t need very much of the stuff to do a good job.
Your experience is different from mine. I find that if I was several items, one after the other, by the time I get to the end, the grease that has been washed off the earlier dishes is settling on the last ones, and anything plastic won’t get anywhere close to clean.
I suppose I could do something similar with just water, but that would involve a whole lot more water and a lot longer time.
That being said, it takes a lot less soap then most people I know use. But that’s true of dish soap, dish washer soap and laundry soap as well.
A lot of hand soaps leave a fragrance on my hands; dish soap, although aromatic, doesn’t seem to leave any sort of scent on my plate.
Another issue is that good dish soaps (read: DAWN) are really aggressive on grease, to the point where they’ll strip the oils right out of your skin. This is why you want gloves if you’re going to be washing a whole sinkload of dishes by hand. (the flip side of this is that when my hands are ridiculously dirty from wrenching on a car/bike, I come to the kitchen and wash my hands with dish soap instead of hand soap.) Hand soaps are typically a compromise between good degreasing/cleansing qualities and being gentle on your skin; they sometimes use ingredients like lanolin, which is not what you want when you’re trying to achieve squeaky-clean dishes.
To avoid making other dishes greasy, wash the greasy dishes LAST.
Slight hijack: Those dish washing liquid commercials really annoy the hell out of me when they DON’T SCRAPE THE DISHES BEFORE WASHING! I mean, how gross can you get? Scrape the leftover food *off *before putting them in the sink!!! Things that need to be soaked: You soak them, soften the food, drain the water, THEN SCRAPE THEM BEFORE WASHING! – Ahem. Sorry. End of slight hijack.
Hey hey HEY! Don’t be dissin’ store brand liquid. I use Tesco’s “naturally effective lemon washing up liquid”.* For some reason they don’t keep it near the artificial, ineffectual washing up liquid. It’s usually right in the middle of the laundry detergent. I guess the boffins in Cheshunt know something I don’t.
FWIW, Fairy Yellow/Lemon is the same as Lemon Joy in the US, right down to the bottle shape.
Yes, that’s the actual product name, including the lower case. I bought it because of the bottle shape, not the purported cleaning efficacy.