The answer is: A kid and some unleavened cakes

Judges 6:19

In the Book of Judges, Gideon's encounter with the angel of the Lord marks a transformative moment in Israel's history. When Gideon prepares an offering of a young goat and unleavened cakes, this act symbolizes his devotion and desire for guidance. Unleavened bread, often associated with purity and haste, showcases his eagerness to welcome divine presence.

What's fascinating is that these sacrificial rituals were deeply ingrained in ancient Israelite culture. Offerings were nearly always more than mere food; they represented one's acknowledgment of a deity's power and the societal bond between the worshipper and God. Levitical laws provided the framework for these offerings, illustrating how vital they were for spiritual petitions and gratitude.

Moreover, it’s important to note that angels, like the one Gideon meets, in biblical terms, are often messengers or representatives of God, bringing not just communication but monumental calls to action. This account reveals not only Gideon's reluctant faith but ties into a rich tradition of community salvation woven through the tapestry of the Bible.

Gideon's offering results in a dramatic confirmation of the angel's presence when the offering is consumed by fire—almost like a divine magic trick! Additionally, this momentary communion foreshadows Gideon's role in Israel's liberation from oppression and serves as an early marker of his leadership. It brilliantly illustrates the theme of ordinary people transformed by extraordinary faith in the journey through trials and redemption.