Complex sentence: The cake became quite popular and General Foods--which owned the brand at the time--distributed the recipe to other newspapers in the country, and sales of Baker's Chocolate are said to have increased by as much as 73%.
Split into simpler sentences: The cake became quite popular and General Foods--which owned Baker's Chocolate at the time--sent the recipe to other newspapers in the country. Sales of the company's Baker's Chocolate are said to have increased by as much as 73%.