mysql> select id, source, user, description, is_recipe, active, recipe_id from food where user = 53;
+-------+--------+------+------------------+-----------+--------+-----------+
| id    | source | user | description      | is_recipe | active | recipe_id |
+-------+--------+------+------------------+-----------+--------+-----------+
| 12864 | user   |   53 | A Book           | 0         | 1      |      NULL |
| 12842 | user   |   53 | Beany Soup       | 1         | 1      |      NULL |
| 12863 | user   |   53 | Bob's Great Food | 1         | 1      |        71 |
| 12844 | user   |   53 | chicken orange   | 1         | 1      |      NULL |
| 12845 | user   |   53 | Good Beans       | 1         | 1      |      NULL |
| 12838 | user   |   53 | Heart Attack     | 1         | 1      |      NULL |
| 12870 | user   |   53 | Nootest          | 1         | 1      |        80 |
| 12837 | user   |   53 | Power Lunch      | 1         | 1      |      NULL |
| 12854 | user   |   53 | Recipe Test 1    | 1         | 1      |      NULL |
| 12855 | user   |   53 | Recipe Test 2    | 1         | 1      |      NULL |
| 12856 | user   |   53 | Recipe Test 3    | 1         | 1      |      NULL |
| 12857 | user   |   53 | Recipe Test 4    | 1         | 1      |      NULL |
| 12858 | user   |   53 | Recipe Test 5    | 1         | 1      |        65 |
| 12865 | user   |   53 | Slurpie          | 1         | 1      |        72 |
| 12843 | user   |   53 | Tangy Soup       | 1         | 1      |      NULL |
+-------+--------+------+------------------+-----------+--------+-----------+
15 rows in set (0.00 sec)

mysql> DELETE FROM food WHERE user = 53 AND recipe_id = NULL;
Query OK, 0 rows affected (0.00 sec)