title: What is the easiest way to create a stacked bar chart using ggplot2?
body: <p>My 4x5 tibble (below) is stored in a .csv file:</p>
  
  <p><img src="https://i.stack.imgur.com/yP7CB.png" alt="My data"></p>
  
  <p>I would like to create a stacked bar chart, where the x-axis represents the three foods and the y-axis represents the percentage points (cumulatively, each bar should add up to 100%), using <strong>ggplot2</strong>.</p>
  
  <p>I'm extremely new to using R (and Stackoverflow) and unsure where to begin with creating this.</p>