The Wheat Beneath The Dispute
The argument over leaven hides an agreement.
The bread is wheat bread.
East and West could fight over fermentation, Passover, symbol, and authority because the deeper material assumption was shared. The eucharistic loaf was not rice, millet, chestnut, or bean cake. It was bread from wheat.1
This shared assumption matters for the long story. The West did not need to prove wheat’s cultural authority each time. It inherited a ritual world in which wheat was already near the center.
That does not make wheat evil. It makes wheat powerful.
The claim is historical, not metabolic. An eleventh-century dispute about leaven does not prove anything about modern glucose curves, gluten disorders, or refined flour.
It does show that bread’s authority was not thin. By 1054, Christians could divide over the form of the loaf while still agreeing that wheat bread belonged on the altar.
That agreement will matter when the later chapters reach The Roller Mill and White Flour and the First Metabolic Wave.
Related sections: Leaven As Fullness; Daily Bread Expands.
Footnotes
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Latin canon law later states the matter explicitly in terms of wheat bread; see 1983 Code of Canon Law, canon 924 §2. For Byzantine practice, see Nicholas Cabasilas, The Life in Christ, book 4, on the bread and wine offered in the mysteries. Primary sources. ↩