When iterating over hashes, we need two placeholder variables to represent each key/value pair.

restaurant_menu = {
  "noodles" => 4,
  "soup" => 3,
  "salad" => 2
}

restaurant_menu.each do |item, price|
  puts "#{item}: #{price}"
end

1. In the example above, we create a new hash called restaurant_menu.
2. Then, we loop through the restaurant_menu hash and assign the key to item and the value to price for each iteration.
3. Finally, we puts out:

noodles: 4
soup: 3
salad: 2