Treatment of dried perennial ryegrass with aqueous citrate ion from sodium citrate chelates calcium from the grass which improves extracting juice from the grass. Addition of ascorbic acid to the aqueous solution decreases enzymatic browning of the juice. The juice is centrifuged and filtered. Microscopic examination of the centrifuged and filtered juice that has been stained with methylene blue demonstrates a cellulose content less than extracted wheat grass. Processing the dried perennial ryegrass can be achieved without electricity. Extraction of nutrients from perennial ryegrass may help alleviate world food shortages and may promote peace.