I recently read a teshuva by R'Ovadia Yosef (Yechaveh Daat 1: 16) that gives the measurement for the k'zayis as a weight, not volume. Instead of saying that the k'zayis is 28cc, which comes out to about 1/6 of a hand-matza according to Rabbi Heinemann's water-displacing tests, ROY says that it is 28 grams, which is the approximately the weight of half a hand-matza. (With standard issue hand matza, you get about 8 matzos a pound, one slice is two ounces, or 56 grams.) <br>
<br>I cannot figure out how ROY turned k'zayis and k'beitza into mass!<br><br>Does anyone have sources or answers?<br clear="all"><br>-- <br>RD