Some Assembly Required is a Farmer's Delight addon loosely based on the Fabric mod Sandwichable by FoundationGames.
Older versions of this mod can be found on curseforge.
The main feature of Some Assembly Required is creating sandwiches using the Sandwiching Station. To create a sandwich, first create some bread slices using Farmer's Delight's cutting board. Then, place a slice of bread on the Sandwiching station and start adding ingredients. Once your sandwich is finished, you can pick it up by breaking it. A sandwich can be eaten to gain all effects from the ingredients, or you can place it down by sneak-right-clicking to decorate your world.
The Sandwiching Station cannot easily be automated. Sandwiches can instead be automated using Create, when it is installed. The mechanical saw can be used to automatically cut bread, and deployers can add ingredients to sandwiches. Spouts can also be used to apply some supported fluids on your sandwiches, so you don't have to deal with empty fluid containers clogging up your conveyor belts.