Devon Kingâs cooking oil is a quality cooking oil that has been in Nigeria for over half a century and has over the years been a trusted brand for consumers. Devon Kingâs cooking oil is fresher than ever before, more affordable and comes in a wide range of pack sizes so that no matter what your need is, you have options to choose from. Kingâs cooking oil is the quality alternative to adulterated (loose) oil and it offers the best value for money.