Final answer:
The Israelites ate matzah (unleavened bread), roast lamb, and bitter herbs on the first Passover.
Step-by-step explanation:
On the first Passover, the Israelites had specific foods as part of their meal. They ate matzah (unleavened bread), which symbolized the haste in which they left Egypt, having no time to let the bread rise. They also ate roast lamb, a sacrificial animal whose blood was used to mark the doors of the Israelite houses, signaling the Angel of Death to pass over these houses.
Additionally, they consumed bitter herbs, a reminder of the bitterness of slavery in Egypt. While wine is commonly associated with the seder during Passover in modern times, it is not specifically mentioned in the context of the first Passover meal.