How can I remove a curse using a Christian method?

Interesting question...

The answer is of course YOU don't (remove the curse). GOD removes it. The temptation of magic or sorcery of any kind is that it allows us to believe we are in control. When we try to take control and to put oneself or something/someone else in God's place we inevitably make a mess of things (See the story of Adam and Eve for an example). The Good News of Christianity and the power that comes with it comes from knowing and trusting that God is in control and that God is a loving and gracious God. Thus the life of the Christian is based on turning to God for direction and deliverance in our lives.

Getting back to the a direct answer to your question. You will undoubtedly get recipes for removal of a curse. Some will suggest Christian symbols such as Holy Water. I would argue that recipes are simply a way of trying to use magic against magic, sorcery against sorcery. That would not be truly Christian in its essence.

For a truly Christian anit-curse, I suggest you immerse yourself in God's loving protection. This can happen in all sorts of ways, but typically includes worshiping regularly with the People of God (aka the Church), reading your Bible and praying, singing, meditating, fasting, etc. The point of all these is not removing a curse, but to come closer to God. It is being one with God, being enveloped in God's presence, which is your strongest anti-curse. After all, what curse can harm God? And what curse can harm the one who abides in God?