The Wrong Stuff

8-year-old’s first Holy Communion invalidated by Church
By JOHN CURRAN, The Associated Press

BRIELLE, N.J. – An 8-year-old girl who suffers from a rare digestive disorder and cannot consume wheat has had her first Holy Communion declared invalid because the wafer contained none, violating Catholic doctrine.

(Thanks, Fark)

Redemptionis Sacramentum, paragraph 48:

“[48.] The bread used in the celebration of the Most Holy Eucharistic Sacrifice must be unleavened, purely of wheat, and recently made so that there is no danger of decomposition.123 It follows therefore that bread made from another substance, even if it is grain, or if it is mixed with another substance different from wheat to such an extent that it would not commonly be considered wheat bread, does not constitute valid matter for confecting the Sacrifice and the Eucharistic Sacrament.124 It is a grave abuse to introduce other substances, such as fruit or sugar or honey, into the bread for confecting the Eucharist. Hosts should obviously be made by those who are not only distinguished by their integrity, but also skilled in making them and furnished with suitable tools.125

123 Cf. Code of Canon Law, can. 924 S2; Missale Romanum, Institutio Generalis, n. 320.
124 Cf. S. Congregation for the Discipline of the Sacraments, Instruction, Dominus Salvator noster, 26 March 1929, n. 1: AAS 21 (1929) pp. 631-642, here p. 632.
125 Cf. ibidem, n. II: AAS 21 (1929) p. 635.

What do you folks think about this? Is the exclusive use of wheat dogmatic, doctrinal, of ordinary tradition (habit, as opposed to Sacred Tradition), or merely intended to preclude the use of unworthy materials?