The Meat that Jesus refers to is the Gospel of the kingdom.
The Kingdom Of God is the Kingdom Of Heaven. It is about relationship with our Creator, the Holy Spirit, by which we manifest His righteousness, peace, joy and love.
The Kingdom Of God is, first of all, in our minds and hearts. From there it transforms our thoughts, our words, our actions, our very lives. Gal 5:25
Meat is the deeper Truth of the Word and Holy Spirit as pertaining to Abundant Life.