Produce may not be mixed with [other] produce —- even new [produce] with [other] new [produce]; and, certainly, new with old. Truly, in [the case of] wine, they permitted to mix strong [wine] with mild [wine], because it improves it.  The lees of [one] wine may not be mixed with [another] wine, but he may give him its own lees. One whose wine was mixed with water may not sell it in a store, unless he notifies him; and not to a merchant —- even if he notifies him —- for this is only to deceive with it.  Wherever they are accustomed to put water into wine, they may put.

A merchant may take from five threshing-floors and put [it] into one bin; from five winepresses, and put [it] into one cask, as long as he does not intend to mix.  R’ Yehudah says: A storekeeper may not distribute parched corn or nuts to the children, because he accustoms them [to come] to him. The sages, however, permit [it].  He may not lower the price. The Sages, however, say: He is remembered for good.  He may not sift crushed beans; [these are] the words of Abba Shaul. The Sages, however, permit [it]. They agree, however, that he may not sift from the opening of the bin, for he is only like one who deceives the eye.  We may not beautify either man, beast, or utensils.