Translation:This is mayonnaise, and this is a salad with mayonnaise.
Pronunciation of word-final consonants: My impression is that the final "s" in "майонез" is pronounced here more or less like [s] (similar to the "s" in "салат") than [z] (cf. the two "s" in "з майонезом"). Maybe I'm wrong… how do others hear it? (I read that Ukrainian has no final devoicing, as opposed to e.g. Russian or German, so I'm confused.)