When I eat rice, I make sure I finish every grain of rice in my plate. If I don't do it, this phrase will keep flashing in my brain "谁知盘中餐，粒粒皆辛苦". It literally means that every grain of rice represents the hard work of a farmer.
So when hubby finishes eating and I see in his plate that there are some grain of rice left (just like what is shown on the photo above), I will ask him to clean up. Once he protested, saying that I do not clean up my plate when I left sauces in it. And he actually thinks that eating all those grain of rice is harder than cleaning up the sauce! Well, funny because I feel the complete contrary.
For him, the plate on the photo above is an unfinished plate. To be fair, I left much more sauce on my plate compared to this photo, especially tomate sauce when we have pasta or spagehetti.
In France, I have seen many people mopping up their plate with a piece of bread. I do it when I really love the sauce, but not systhematically, and I don't think tomato sauce goes well with bread. Sometimes I feel full already and there will still be salad, cheese and dessert coming, so I figure I better leave some space in my stomach than filling it with bread and sauce.
So, do you clean your plate of rice or sauce? Or maybe both?