Overnight waffles with teff, coriander, and caramelized pineapples - OLDWAYS - Cultural Food Traditi

Ingredients

• 1 cup plus 1 tablespoon (120 g) whole grain spelt flour or white whole wheat flour
• ¾ cup plus 1 tablespoon (115 g) whole grain teff flour
• 3 tablespoons coriander sugar (see below), plus extra for sprinkling
• 1 ½ teaspoons instant or rapid-rise yeast
• ¼ teaspoon fine sea salt
• 2 large eggs
• 2 ¼ cups whole or low-fat milk
• 4 teaspoons finely grated orange zest (from 1 large orange), preferably organic
• ½ teaspoon vanilla extract
• ¼ cup extra-virgin olive oil or vegetable oil
• 4 (½-inch-thick) pineapple rings (from about half a 4-pound fruit)
• 1 to 2 cups whole or part-skim ricotta, for serving