There's no set amount of recipes needed for a cookbook. Create as small or as large of a cookbook as you like. In many cases, your publishing company will tell you how many recipes they'd like to see included in your book.
There is no minimum, but starting a business, especially a technology-based one, can be very expensive. Figure out what you plan on selling, figure out registering fees, etc.
In order to use another person's pictures, you must have their written permission. In this case, the images cannot be images that are easily available online. They must be original...
You'll need to create your own recipes to publish in your cookbook. If you're adapting or changing recipes that you've found online, always give credit to the original recipe and...
Salad in a jar. Turkey pita/sandwich. Fruit kebabs. Hard boiled eggs. Meatballs/tortilla. Cobb salad. Black rice and sliced strawberries. Green pork chili soup.
Simple recipes = simple ingredients and simple steps. Always choose simple ingredients with few/easy steps when you start. Remember that less is more. And step out of your comfort zone,...
