I am basing this question on something I read somewhere: that a non-Jew is able to accept the Torah and obligate himself in mitzvot independent of the bet din (court) conversion procedure. A non-Jew can even be ignorant of the contents of the Torah and do this. Since he has not gone through our procedure, however, we do not accept him as a Jew until he has done so.
Nonetheless, if I have a Reform convert as a guest (who doesn't keep kosher), may I serve him ham (ignoring moris ayin etc.)?
Is my premise correct?