Before coupon apps and online price comparisons, families had to find their own ways to save money at the grocery store. Shopping took more planning, and people learned habits that helped them stretch every dollar. From making shopping lists to buying food in bulk, many of these methods were passed down from grandparents. Although grocery stores and shopping habits have changed over the years, many old-fashioned ways of saving money still work today. People found ways to waste less food, spend intelligently, and make the most of what they already had. Here are 15 ways people kept grocery bills low…