I'm a little late coming to the party, but chocolate chips DO NOT have to be parve to be kosher. "Parve" means the food product is neutral - neither meat nor dairy - and hence may be served with either. Chips can, and frequently are kosher dairy. Symbols on the package might include OUD or KD or even KDE, signifiying that the product contains no dairy but was made on machinery that previously ran dairy items. Those chips are entirely kosher but can only be eaten with a dairy meal. Also, the avoidance of walnuts on Rosh Hashanah is an Ashkenazi tradition. And the "bad thing" that the Hebrew word for walnuts adds up to is "sin." We try to avoid the reminder of sin at a season of repentance. To further muddy things up, some Jews, but by no means all, not even a majority, hold to the "non-gebrokhts" standard during Passover. That means that they will not use matzah products in any was that will cause them to come into contact with liquid. That obviously includes baking. The vast majority of Jews, both fully observant and less so, will use matzah meal and matzah cake meal during Passover. There are even Passover certified baking powder, baking soda, and vanilla more or less widely available. Sorry for the digressive explosion of information.

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