De or het receptvrij?

The correct Dutch article is:

de receptvrij

Rule Words ending in -ij and -erij: usually de. See the rule

How to use receptvrij

the receptvrijde receptvrij
this receptvrijdeze receptvrij
that receptvrijdie receptvrij
our receptvrijonze receptvrij
your receptvrijjouw receptvrij
every receptvrijelke receptvrij
which receptvrij?welke receptvrij?
a big receptvrij / the big receptvrijeen grote receptvrij, de grote receptvrij