We can eat anything which God has created. Since the advent of the New Testament, God has not forbidden us from eating anything. We have the liberty to eat whatsoever we please. The Lord said we should not call anything that God has created unclean.
In the Old Testament, God gave Moses a commandment and ordinances which the children of Israel where to follow. There were many forbidden things in the law. There were laws which they were to keep. One of the laws forbid them from eating pork and other animals of such. The Lord Jesus Christ is the fulfilment of the laws. In the new testament, God demonstrated by showing Peter a vision which explained that we can eat anything.
It is better to note that we should exercise discipline when eating whatever we are eating. We should not eat carelessly and like gluttons. We should not eat to become drunken. We should do whatever we are doing with moderation.