require 'nokogiri'
require 'open-uri'

url = "http://damndelicious.net/2017/01/16/turkey-and-spinach-veggie-lasagna/"
doc = Nokogiri::HTML(open(url))


ingredients = Ingredient.create do |ingredient|
  ingredient.name = doc.at_css(".ingredient").text
end

<li class="ingredient">1 tablespoon olive oil</li>
<li class="ingredient">2 cloves garlic, minced</li>
<li class="ingredient">1 onion, diced</li>
<li class="ingredient">2 zucchinis, diced</li>