While we cannot with certainty pinpoint the exact causes of the November 2019 drops, during the analysis we observed a few common patterns and SEO issues the food blogs are facing.
The examined food blogs proved to be prone to traffic and rankings fluctuations around the time of Google algorithm updates. Most of those domains were negatively affected by at least one of the discussed pre-November updates, and by at least one post-November Update.
On average, the sites had 33% fewer organic sessions after the November 2019 Update, and most did not regain them after the following algorithm modifications. 75% of blogs had decreasing trends in January 2020.
The most dependent on those changes were the top-performing landing pages that drove a significant number of impressions to each domain. Each blog lost impressions for at least 65% of its top-performing keywords from October 2019. Almost all blogs participating in the study had considerably fewer keywords ranking in the top three of SERPs after the changes rolled out in November.
Some of the rankings changes though, may not be connected to the overall condition of the sites and are a result of Google adjusting the video carousels position in SERP.