When we read the scriptures about Passover in the English, it appears that all foods “with yeast” are not allowed at Passover. Unfortunately, we know this is impossible since we read in the gospels that Yeshua drank wine at his last Passover Sedar, and wine is made with yeast.
At the Passover Sedar, it is traditional to drink four cups of wine. Wine is made by fermenting fruit, usually grapes. Wines are usually fermented with the exact same family of yeast that is found in bakers’ yeast today (Saccharomyces cerevisiae).
We can reconcile this apparent contradiction when we understand that chametz is formed when yeast feeds on wheat, barley, rye, oats, spelt, or their derivatives. In wine, yeast spores feed on grapes or fruit, so it’s not chametz. Bakers’ yeast is produced by feeding yeast with molasses made from sugar cane or beets, so it’s not chametz until it’s mixed with flour and water. Brewers’ yeast, on the other hand, is a byproduct of beer making, which makes it chametz because the yeast fed on barely or other grains.
People in the Hebrew-roots movement and Messianic Judaism have varying viewpoints about kosher and kosher for Passover. The important thing is to really seek God’s face and ask Him to help you walk with Him how He wants you to walk. Read His instructions and discuss them with others who love God and are called according to His purpose.