Yep - close to the original although slightly maltier. Here's my recipe which was taken from somewhere either on this board or some other place:
Recipe: Dogfish Head 90 Minute Clone
Brewer: Mike
Asst Brewer:
Style: Imperial IPA
TYPE: Partial Mash
Taste: (35.0) The final taste was very good and very close to the original. This was slightly maltier and fuller bodied tasting. The original is a little brighter in flavors. Overall a great clone and was great to drink!
Recipe Specifications
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Boil Size: 6.48 gal
Post Boil Volume: 5.46 gal
Batch Size (fermenter): 5.00 gal
Bottling Volume: 5.00 gal
Estimated OG: 1.088 SG
Estimated Color: 8.3 SRM
Estimated IBU: 135.4 IBUs
Brewhouse Efficiency: 75.00 %
Est Mash Efficiency: 93.0 %
Boil Time: 105 Minutes
Ingredients:
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Amt Name Type # %/IBU
1 lbs 12.0 oz Pilsner (2 Row) Ger (2.0 SRM) Grain 1 15.3 %
1 lbs 10.6 oz Amber Malt (22.0 SRM) Grain 2 14.5 %
8 lbs Extra Light Dry Extract (3.0 SRM) Dry Extract 3 70.1 %
2.00 oz Amarillo [8.00 %] - Boil 90.0 min Hop 4 67.7 IBUs
0.62 oz Simcoe [13.00 %] - Boil 90.0 min Hop 5 34.1 IBUs
0.53 oz Warrior [15.00 %] - Boil 90.0 min Hop 6 33.6 IBUs
1.00 tsp Irish Moss (Boil 15.0 mins) Fining 7 -
1.0 pkg Whitbread Ale (Wyeast Labs #1099) [125.0 Yeast 8 -
1.00 oz Amarillo [8.00 %] - Dry Hop 3.0 Days Hop 9 0.0 IBUs
0.50 oz Simcoe [13.00 %] - Dry Hop 3.0 Days Hop 10 0.0 IBUs
0.50 oz Warrior [15.00 %] - Dry Hop 3.0 Days Hop 11 0.0 IBUs
Mash Schedule: Single Infusion, Light Body, Batch Sparge
Total Grain Weight: 11 lbs 6.6 oz
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Steep crushed grains in 1.1 gallons (4 L) of water at 150 *F (66 *C) for 45 minutes. Boil the wort for 105 minutes. Starting with 90 minutes left in the boil, begin slowly and evenly adding hops to the kettle. (This works out to a little over .25 oz. of hops every 7.5 minutes. Another approach is that the kettle hops comes to 89 grams. Round to 90 and use 9 grams every 10 minutes.