Large commodity consumers often contract their supplies directly at the source. They enter into bilateral agreements with producers. Giant players transact in bulk. Bespoke terms and conditions may apply to the supply contracts they enter into. However, not all bilateral deals are structured and complex; some transactions concern standard agreements. Straight forward contracts may be less sexy, but allow for swift action. Altogether, bilateral deal-making takes place in the so-called over-the-counter markets. In this book relevant aspects are set out for professionals in the commodity and energy wholesale markets.