(11) This is how you shall eat it: your loins girded, your sandals on your feet, and your staff in your hand; and you shall eat it hurriedly: it is a Passover offering to the LORD.
(ב) בחפזון. לְשׁוֹן בֶּהָלָה וּמְהִירוּת, כְּמוֹ "וַיְהִי דָּוִד נֶחְפָּז לָלֶכֶת" (שמואל א' כ"ג), "אֲשֶׁר הִשְׁלִיכוּ אֲרָם בְּחָפְזָם" (מלכים ב' ז'):
(2) בחפזון — This is an expression denoting hurry and haste, similar to, (I Samuel 23:26) “And David made haste (נחפז) to get away”; (2 Kings 7:15) ”which the Arameans had cast away in their haste"
The pace of eating is influenced by external triggers (dining atmosphere, sounds, colours, lighting), whether you’re in the company of other slow or fast eaters, and have a sense of urgency to move on and do other ‘things’.
How long should you take to consume a meal?
How long you take really depends on what you’re eating - the texture and amount served. It’s not possible to put a hard and fast ‘time target’ for any meal.
If you’re always first to finish regardless of what the meal is, slow down
(http://www.foodtalk.com.au)
We have also a Baraitha to the same effect: Did the Lord, thy God, bring thee forth out of Egypt by night (Deu. 16, 1). "Did they really go out at night? Behold! it was in the morning, for it is said (Num. 33, 3.) On the morrow after the Passover sacrifice did the children of Israel go out with a high hand. We must, therefore, say that the beginning of the deliverance was in the evening."
ואותה סעודה שעושין בשביל הנס היא סעודת מצוה דכל סעודה שעושין לזכר נפלאות ד' הוא סעודת מצוה:
And that meal that is done on account of the miracle is a Seudat Mitzvah in as much as any meal that is held on account of God's wonders is a Seudat Mitzvah (MB 697:2)
