title_body: How to make a very DENSE mocha?
upvoted_answer: Posting comment on original question as an answer to benefit the Google creepy crawly bot.
  Mochas are latte-based drinks. They use steamed and frothed milk, not just plain milk. Steamed and frothed milk are both produced by mixing air and heat with milk (typically by injecting steam, by heating and agitating, or by a combination of these) to make it creamier. You can make frothed milk without special tools by agitating milk aggressively while heating it on the stove. Use a hand mixer or immersion blender. If you like the effect, you can buy dedicated frother devices for about $30-40 online.