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1
Mix all the ingredients marked with a .
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2
Remove any excess fat from the beef.
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3
Also remove the sinew, then pound the meat.
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4
Place it inside a Ziploc bag with the mixture from Step 1.
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5
Let it rest in the fridge for half a day.
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6
Take it out 20-30 minutes before serving.
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7
Transfer the meat from the bag, and season well with salt and pepper.
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8
Do not discard the marinating sauce.
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9
Slice the onion with a slicer, then soak it in water.
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10
Rinse the mesclun mix with water, then drain.
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11
Toast the bread to your preferred crustiness.
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12
When done, spread the butter on one of the two.
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13
Warm the frying pan over high heat.
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14
When it's hot, cook the meat quickly with the marinating sauce.
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15
Flip over when one side is nicely browned, and also cook the other side.
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16
When the meat is golden brown, transfer it onto a plate with the sauce.
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17
Let it rest for a while.
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18
Slice the meat after it has slightly cooled down.
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19
Please adjust cooking time to your liking.
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20
Place some mesclun leaves on the bread, then top with the beef and sliced onions.
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21
Pour the sauce over everything, then sandwich with the other slice of toast.
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22
Cut the sandwich into preferred sizes.
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23
Dish it up, and enjoy!
