Do messianic Jews keep kosher?

I live in the boondocks and there are no shuls or synagogues near me, not even chabad, and no kosher markets. I am otd currently but slowly working my way back. I noticed there are several messianic temples in my area and i wonder where they get their food if they keep kosher. Would it be naughty of me to call one and ask where they get food? For Rosh HaShannah my son drove an hour away and got me some things from a store that had a kosher sections but they basically had no meat or chicken left and no yummy side dishes like kugel.