This is where most entrepreneurs break down; at the writing of their business plan. You thought the research for your catering business was tough? Well, this is where the rubber meets the road. You have to put pen to paper. You have to spell out in a clear, concise manner every detail of your business plan from concept to completion. Along the way you’ll have to convince any number of financial geniuses of the worthiness of your plan. Every business plan must have certain elements.