The most common and most likely answer to this crossword clue is the 4 plus 3 letter word MEAT PIE
I've seen this crossword clue in The Guardian
M
E
A
T
P
I
E
More clues leading to the result MEAT PIE
- Snack has to satisfy, say, one in gym
- Cyclops article that is about Trump’s extremes – for individual consumption?
- Substantial food item accompanying pea in soup — the writer’s about to scoff a little more than 3
- Nosh very good, feeding me pastry dish
- What you might pick up when being introduced to Greek character’s food
- Food that millions consume with pride, oddly
- Maine school group promoted extremists to illustrate unhealthy food?
Buddy explains!
The straight part
We know that "Substantial food" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case substantial food = meat pie.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.