In order to get the "Gourmet" achievement, you must consume all edible food items in the game, including juices and alternate versions of certain foods. This guide will explain where to find each food item.

With the exception of pie, all of the following food items can be found in Seon's Food and Stuff store found in the North Plaza (the place where you fight the crazy store owner in case 2-3).

• Apple
  
• Baguette
  
• Cabbage
  
• Cheese
  
• Coffee Creamer
  
• Cookies
  
• Corn
  
• Frozen Vegetables
  
• Grapefruit
  
• Ice Pops
  
• Japanese Radish
  
• Orange
  
• Orange Juice
  
• Lettuce
  
• Melon
  
• Meat
  
• Milk (must drink from both a carton AND a jug)
  
• Pizza
  
• Red Cabbage
  
• Snack
  
• Squash
  
• Wine
  
• Yogurt
  
• Zucchini

Pie is found inside of the Colombian Roastmasters cafe located in both Paradise Plaza and Al Fresca Plaza. You must break the glass in order to obtain them.

There are a few extra food items that can only be obtained through certain means. Here is how to get them:

• Thawed Vegetables (have frozen vegetables in your inventory for a while).
  
• Spoiled Meat (have regular meat in your inventory for a while).
  
• Rotten Pizza (have pizza in your inventory for a while).
  
• Melted Ice Pops (have icepops in your inventory for a while).

• Well Done Steak (put meat in the microwave).
  
• Golden Brown Pizza (put pizza in the microwave).

Microwaves can be found behind the counters of various food places, such as in Jill's Sandwiches (Paradise Plaza) and just about every area in the Food Court.

In addition to eating food, you also need to drink every blendable juice item. You can create juices by placing various ingredients in blenders, found in areas such as Frozen Dreams in the Food Court and the Colombian Roastmasters cafes. Here are the ingredients to make each juice:

• Randomizer: Baguette and Cooking Oil.
  
• Quickstep: 2 Randomizers.
  
• Zombie Bait: Pie and Snacks.
  
• Energizer: Randomizer amd Zombie Bait.
  
• Nectar: 2 Orange Juices.
  
• Spitfire: 2 Snacks.
  
• Untouchable: Orange Juice and Pie.

Hopefully this guide helped in finding all of the food items. Special thanks to deadrising.wiki for providing pictures of the foods shown in this guide, as well as for finding a few of the store locations. If you feel this guide can be improved in some way, please say so in the comments.